CVE-2026-113794

NameCVE-2026-113794
Descriptionpypdf is a free and open-source pure-python PDF library. Prior to 6.20.0, an attacker can craft an incomplete PDF that ends inside a standard cross-reference table, causing pypdf to mishandle the unexpected end of file and enter an infinite loop. This issue is fixed in version 6.20.0.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pypdf (PTS)bookworm3.4.1-1+deb12u1vulnerable
trixie5.4.0-1vulnerable
forky6.19.0-1vulnerable
sid6.21.1-1fixed
pypdf2 (PTS)bookworm2.12.1-3+deb12u1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pypdfsource(unstable)6.21.0-1
pypdf2source(unstable)(unfixed)

Notes

https://github.com/py-pdf/pypdf/security/advisories/GHSA-39mj-jf6j-2qj3
https://github.com/py-pdf/pypdf/issues/4169
https://github.com/py-pdf/pypdf/pull/4170
Fixed by: https://github.com/py-pdf/pypdf/commit/37e1cd681744bac38b159f7e1c614eee8d639c58 (6.20.0)

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