CVE-2026-93313: Freedesktop Poppler JBIG2Stream.cc readCodeTableSeg integer overflow

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-18 · updated 2026-09-18
Weakness: CWE-189

Description

A vulnerability was found in Freedesktop Poppler 26.07.0. The impacted element is the function JBIG2Stream::readCodeTableSeg of the file poppler/JBIG2Stream.cc. Performing a manipulation results in integer overflow. The attack can be initiated remotely. The exploit has been made public and could be used. The patch is named eb87cf711563894649bd0c365baa479401dc6d51. To fix this issue, it is recommended to deploy a patch.

Affected products

poppler: 26.07.0

References

https://github.com/r1ck9-2q/cve_summit/blob/main/Signed-integer-overflow-in-JBIG2Stream-readCodeTableSeg-JBIG2Stream.cc-4118.md
https://gitlab.freedesktop.org/poppler/poppler/-/commit/eb87cf711563894649bd0c365baa479401dc6d51?merge_request_iid=2322
https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/2322
https://gitlab.freedesktop.org/poppler/poppler/-/work_items/1760
https://vuldb.com/cve/CVE-2026-93313
https://vuldb.com/submit/942346
https://vuldb.com/vuln/406612
https://vuldb.com/vuln/406612/cti

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