CVE-2026-93312: medium-severity vulnerability in Freedesktop Poppler
Freedesktop Poppler JBIG2Stream.cc rewind null pointer dereference
Published · Updated
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33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.3epss 0.4%
A flaw has been found in Freedesktop Poppler 26.07.0. Impacted is the function JBIG2Stream::rewind of the file poppler/JBIG2Stream.cc. This manipulation causes null pointer dereference. It is possible to initiate the attack remotely. The exploit has been published and may be used. Upgrading to version 26.08.0 is recommended to address this issue. Patch name: 5e49250f13b0390edeb3f90eb4c02c9941f97067. Upgrading the affected component is advised.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
Freedesktop · Popplerpublic PoCs found — 1
cve_referencegithub.com/r1ck9-2q/cve_summit/blob/main/Null-pointer-offset-undefined-behavior-in-JBIG2Stream-rewind-JBIG2Stream.cc-1229.mdunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Freedesktop Poppler
In the same product, most dangerous first.
CVE-2026-93311MEDIUMFreedesktop Poppler SampledFunction Function.cc integer overflowEPSS 0.6%CVE-2026-93314MEDIUMFreedesktop Poppler FoFiTrueType.cc mapCodeToGID integer overflowEPSS 0.2%CVE-2026-93313MEDIUMFreedesktop Poppler JBIG2Stream.cc readCodeTableSeg integer overflowEPSS 0.2%CVE-2026-102620MEDIUMFreedesktop Poppler FoFiTrueType.cc cvtSfnts integer overflowEPSS 0.1%CVE-2026-102621MEDIUMFreedesktop Poppler SplashClip.cc clipToPath integer overflowEPSS 0.1%
References
https://github.com/r1ck9-2q/cve_summit/blob/main/Null-pointer-offset-undefined-behavior-in-JBIG2Stream-rewind-JBIG2Stream.cc-1229.mdhttps://gitlab.freedesktop.org/poppler/poppler/-/commit/5e49250f13b0390edeb3f90eb4c02c9941f97067https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/2314https://gitlab.freedesktop.org/poppler/poppler/-/work_items/1759https://vuldb.com/cve/CVE-2026-93312https://vuldb.com/submit/942345https://vuldb.com/vuln/406610https://vuldb.com/vuln/406610/cti