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CVE-2026-56132

Medium priority
Needs evaluation

In libexpat before 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold backing array reallocation is mishandled when there is data-structure sharing across parsers.

23 affected packages

expat, apache2, apr-util, cmake, ghostscript...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
expat Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
apache2 Not affected Not affected Not affected Not affected Not affected
apr-util Not affected Not affected Not affected Not affected Not affected
cmake Not affected Not affected Not affected Not affected Not affected
ghostscript Not affected Not affected Not affected Not affected Not affected
texlive-bin Not affected Not affected Not affected Not affected Not affected
xmlrpc-c Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
vnc4 Not in release Not in release Not in release Needs evaluation
wbxml2 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
swish-e Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
insighttoolkit4 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
cadaver Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
gdcm Not affected Not affected Not affected Not affected Needs evaluation
ayttm Not in release Not in release Not in release
cableswig Not in release Not in release Not in release
coin3 Not affected Not affected Not affected Not affected Needs evaluation
matanza Ignored Ignored Ignored Ignored Needs evaluation
tdom Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
vtk Not in release Not in release Not in release
smart Not in release Not in release Not in release Needs evaluation
firefox Not affected Not affected Not affected
thunderbird Not affected Not affected Not affected
libxmltok Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
Show all 23 packages Show less packages

CVE-2026-56131

Medium priority
Needs evaluation

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).

23 affected packages

expat, apache2, apr-util, cmake, ghostscript...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
expat Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
apache2 Not affected Not affected Not affected Not affected Not affected
apr-util Not affected Not affected Not affected Not affected Not affected
cmake Not affected Not affected Not affected Not affected Not affected
ghostscript Not affected Not affected Not affected Not affected Not affected
texlive-bin Not affected Not affected Not affected Not affected Not affected
xmlrpc-c Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
vnc4 Not in release Not in release Not in release Needs evaluation
wbxml2 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
swish-e Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
insighttoolkit4 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
cadaver Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
gdcm Not affected Not affected Not affected Not affected Needs evaluation
ayttm Not in release Not in release Not in release
cableswig Not in release Not in release Not in release
coin3 Not affected Not affected Not affected Not affected Needs evaluation
matanza Ignored Ignored Ignored Ignored Needs evaluation
tdom Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
vtk Not in release Not in release Not in release
smart Not in release Not in release Not in release Needs evaluation
firefox Not affected Not affected Not affected
thunderbird Not affected Not affected Not affected
libxmltok Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
Show all 23 packages Show less packages

CVE-2026-50219

Medium priority
Needs evaluation

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handlers in cases of a policy violation. Thus, a use-after-free can occur,

23 affected packages

apache2, apr-util, ayttm, cableswig, cadaver...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
apache2 Not affected Not affected Not affected Not affected Not affected
apr-util Not affected Not affected Not affected Not affected Not affected
ayttm Not in release Not in release Not in release
cableswig Not in release Not in release Not in release
cadaver Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
cmake Not affected Not affected Not affected Not affected Not affected
coin3 Not affected Not affected Not affected Not affected Needs evaluation
expat Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
firefox Not affected Not affected Not affected
gdcm Not affected Not affected Not affected Not affected Needs evaluation
ghostscript Not affected Not affected Not affected Not affected Not affected
insighttoolkit4 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
libxmltok Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
matanza Ignored Ignored Ignored Ignored Needs evaluation
smart Not in release Not in release Not in release Needs evaluation
swish-e Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
tdom Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
texlive-bin Not affected Not affected Not affected Not affected Not affected
thunderbird Not affected Not affected Not affected
vnc4 Not in release Not in release Not in release Needs evaluation
vtk Not in release Not in release Not in release
wbxml2 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xmlrpc-c Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
Show all 23 packages Show less packages

CVE-2026-45186

Medium priority
Needs evaluation

In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.

23 affected packages

apache2, apr-util, ayttm, cableswig, cadaver...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
apache2 Not affected Not affected Not affected Not affected Not affected
apr-util Not affected Not affected Not affected Not affected Not affected
ayttm Not in release Not in release Not in release
cableswig Not in release Not in release Not in release
cadaver Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
cmake Not affected Not affected Not affected Not affected Not affected
coin3 Not affected Not affected Not affected Not affected Needs evaluation
expat Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
firefox Not affected Not affected Not affected
gdcm Not affected Not affected Not affected Not affected Needs evaluation
ghostscript Not affected Not affected Not affected Not affected Not affected
insighttoolkit4 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
libxmltok Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
matanza Ignored Ignored Ignored Ignored Needs evaluation
smart Not in release Not in release Not in release Needs evaluation
swish-e Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
tdom Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
texlive-bin Not affected Not affected Not affected Not affected Not affected
thunderbird Not affected Not affected Not affected
vnc4 Not in release Not in release Not in release Needs evaluation
vtk Not in release Not in release Not in release
wbxml2 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xmlrpc-c Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
Show all 23 packages Show less packages

CVE-2026-41080

Medium priority
Needs evaluation

libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.

23 affected packages

apache2, apr-util, ayttm, cableswig, cadaver...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
apache2 Not affected Not affected Not affected Not affected Not affected
apr-util Not affected Not affected Not affected Not affected Not affected
ayttm Not in release Not in release Not in release
cableswig Not in release Not in release Not in release
cadaver Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
cmake Not affected Not affected Not affected Not affected Not affected
coin3 Not affected Not affected Not affected Not affected Needs evaluation
expat Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
firefox Not affected Not affected Not affected
gdcm Not affected Not affected Not affected Not affected Needs evaluation
ghostscript Not affected Not affected Not affected Not affected Not affected
insighttoolkit4 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
libxmltok Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
matanza Ignored Ignored Ignored Ignored Needs evaluation
smart Not in release Not in release Not in release Needs evaluation
swish-e Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
tdom Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
texlive-bin Not affected Not affected Not affected Not affected Not affected
thunderbird Not affected Not affected Not affected
vnc4 Not in release Not in release Not in release Needs evaluation
vtk Not in release Not in release Not in release
wbxml2 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xmlrpc-c Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
Show all 23 packages Show less packages

CVE-2026-4739

Medium priority
Needs evaluation

Integer Overflow or Wraparound vulnerability in InsightSoftwareConsortium ITK (‎Modules/ThirdParty/Expat/src/expat modules).This issue affects ITK: before 2.7.1.

23 affected packages

apache2, apr-util, ayttm, cableswig, cadaver...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
apache2 Not affected Not affected Not affected Not affected Not affected
apr-util Not affected Not affected Not affected Not affected Not affected
ayttm Not in release Not in release Not in release
cableswig Not in release Not in release Not in release
cadaver Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
cmake Not affected Not affected Not affected Not affected Not affected
coin3 Not affected Not affected Not affected Not affected Needs evaluation
expat Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
firefox Not affected Not affected Not affected
gdcm Not affected Not affected Not affected Not affected Needs evaluation
ghostscript Not affected Not affected Not affected Not affected Not affected
insighttoolkit4 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
libxmltok Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
matanza Ignored Ignored Ignored Ignored Needs evaluation
smart Not in release Not in release Not in release Needs evaluation
swish-e Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
tdom Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
texlive-bin Not affected Not affected Not affected Not affected Not affected
thunderbird Not affected Not affected Not affected
vnc4 Not in release Not in release Not in release Needs evaluation
vtk Not in release Not in release Not in release
wbxml2 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xmlrpc-c Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
Show all 23 packages Show less packages

CVE-2026-32778

Medium priority
Needs evaluation

libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier ouf-of-memory condition.

23 affected packages

apache2, apr-util, ayttm, cableswig, cadaver...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
apache2 Not affected Not affected Not affected Not affected Not affected
apr-util Not affected Not affected Not affected Not affected Not affected
ayttm Not in release Not in release Not in release
cableswig Not in release Not in release Not in release
cadaver Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
cmake Not affected Not affected Not affected Not affected Not affected
coin3 Not affected Not affected Not affected Not affected Needs evaluation
expat Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
firefox Not affected Not affected Not affected
gdcm Not affected Not affected Not affected Not affected Needs evaluation
ghostscript Not affected Not affected Not affected Not affected Not affected
insighttoolkit4 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
libxmltok Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
matanza Ignored Ignored Ignored Ignored Needs evaluation
smart Not in release Not in release Not in release Needs evaluation
swish-e Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
tdom Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
texlive-bin Not affected Not affected Not affected Not affected Not affected
thunderbird Not affected Not affected Not affected
vnc4 Not in release Not in release Not in release Needs evaluation
vtk Not in release Not in release Not in release
wbxml2 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xmlrpc-c Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
Show all 23 packages Show less packages

CVE-2026-32777

Medium priority
Needs evaluation

libexpat before 2.7.5 allows an infinite loop while parsing DTD content.

23 affected packages

apache2, apr-util, ayttm, cableswig, cadaver...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
apache2 Not affected Not affected Not affected Not affected Not affected
apr-util Not affected Not affected Not affected Not affected Not affected
ayttm Not in release Not in release Not in release
cableswig Not in release Not in release Not in release
cadaver Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
cmake Not affected Not affected Not affected Not affected Not affected
coin3 Not affected Not affected Not affected Not affected Needs evaluation
expat Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
firefox Not affected Not affected Not affected
gdcm Not affected Not affected Not affected Not affected Needs evaluation
ghostscript Not affected Not affected Not affected Not affected Not affected
insighttoolkit4 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
libxmltok Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
matanza Ignored Ignored Ignored Ignored Needs evaluation
smart Not in release Not in release Not in release Needs evaluation
swish-e Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
tdom Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
texlive-bin Not affected Not affected Not affected Not affected Not affected
thunderbird Not affected Not affected Not affected
vnc4 Not in release Not in release Not in release Needs evaluation
vtk Not in release Not in release Not in release
wbxml2 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xmlrpc-c Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
Show all 23 packages Show less packages

CVE-2026-32776

Medium priority
Needs evaluation

libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content.

23 affected packages

apache2, apr-util, ayttm, cableswig, cadaver...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
apache2 Not affected Not affected Not affected Not affected Not affected
apr-util Not affected Not affected Not affected Not affected Not affected
ayttm Not in release Not in release Not in release
cableswig Not in release Not in release Not in release
cadaver Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
cmake Not affected Not affected Not affected Not affected Not affected
coin3 Not affected Not affected Not affected Not affected Needs evaluation
expat Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
firefox Not affected Not affected Not affected
gdcm Not affected Not affected Not affected Not affected Needs evaluation
ghostscript Not affected Not affected Not affected Not affected Not affected
insighttoolkit4 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
libxmltok Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
matanza Ignored Ignored Ignored Ignored Needs evaluation
smart Not in release Not in release Not in release Needs evaluation
swish-e Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
tdom Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
texlive-bin Not affected Not affected Not affected Not affected Not affected
thunderbird Not affected Not affected Not affected
vnc4 Not in release Not in release Not in release Needs evaluation
vtk Not in release Not in release Not in release
wbxml2 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xmlrpc-c Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
Show all 23 packages Show less packages

CVE-2026-25210

Medium priority

Some fixes available 12 of 73

In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.

23 affected packages

apache2, apr-util, ayttm, cableswig, cadaver...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
apache2 Not affected Not affected Not affected Not affected Not affected
apr-util Not affected Not affected Not affected Not affected Not affected
ayttm Not in release Not in release Not in release
cableswig Not in release Not in release Not in release
cadaver Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
cmake Not affected Not affected Not affected Not affected Not affected
coin3 Not affected Not affected Not affected Not affected Needs evaluation
expat Not affected Fixed Fixed Fixed Fixed
firefox Not affected Not affected Not affected
gdcm Not affected Not affected Not affected Not affected Needs evaluation
ghostscript Not affected Not affected Not affected Not affected Not affected
insighttoolkit4 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
libxmltok Not in release Fixed Fixed Fixed Fixed
matanza Ignored Ignored Ignored Ignored Needs evaluation
smart Not in release Not in release Not in release Needs evaluation
swish-e Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
tdom Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
texlive-bin Not affected Not affected Not affected Not affected Not affected
thunderbird Not affected Not affected Not affected
vnc4 Not in release Not in release Not in release Needs evaluation
vtk Not in release Not in release Not in release
wbxml2 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xmlrpc-c Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
Show all 23 packages Show less packages