Fluid Attacks Database

Description

pypdf: Possible long runtimes with large amount of embedded files

Impact

An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing the embedded files through the dictionary-based API.

Patches

This has been fixed in pypdf==6.19.0.

Workarounds

If you cannot upgrade yet, consider applying the changes from PR #4081.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Component	Affected version	Patched versions
pypi	pypdf	>=0 <6.19.0	6.19.0
debian 13	pypdf	=5.4.0-1 \|\| =6.19.0-1 \|\| =6.9.0-1 \|\| =6.9.2-1 \|\| =6.9.2-2	-
debian 14	pypdf	=5.4.0-1 \|\| =6.9.0-1 \|\| =6.9.2-1 \|\| =6.9.2-2 \|\| >=0 <6.19.0-1	6.19.0-1
debian 12	pypdf	=3.17.4-1 \|\| =3.4.1-1 \|\| =3.4.1-1+deb12u1 \|\| =4.0.0-1 \|\| =4.0.0-1~exp1 \|\| =4.0.1-1 \|\| =4.0.2-1 \|\| =4.1.0-1 \|\| =4.2.0-1 \|\| =4.3.1-1 \|\| =5.4.0-1 \|\| =6.19.0-1 \|\| =6.9.0-1 \|\| =6.9.2-1 \|\| =6.9.2-2	-

Aliases

1. CVE-2026-1029992. NVD-2026-1029993. OSV-2026-1029994. OSV-DEBIAN-2026-1029995. GHSA-v247-6f48-mgcj6. GCVE-2026-1029997. SECURITY-TRACKER-CVE-2026-102999

References

1. https://github.com/py-pdf/pypdf/security/advisories/GHSA-v247-6f48-mgcj2. https://github.com/py-pdf/pypdf/pull/40813. https://github.com/py-pdf/pypdf/commit/6b10556d13609a68f9ed18bb29fdd8bba88eb2c34. https://github.com/py-pdf/pypdf/releases/tag/6.19.0

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