Nixpkgs security tracker

Untriaged

Permalink CVE-2026-28351

created 1 month, 3 weeks ago

Manipulated RunLengthDecode streams can exhaust RAM

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.4, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter. This has been fixed in pypdf 6.7.4. As a workaround, consider applying the changes from PR #3664.

References

https://github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3664 x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/f309c6003746414dc7b5048c19e6d879ff2dc858 x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.7.4 x_refsource_MISC

Affected products

pypdf

==< 6.7.4

Matching in nixpkgs

pkgs.capypdf

Fully color managed PDF generation library

nixos-unstable 0.20.0
- nixpkgs-unstable 0.20.0
- nixos-unstable-small 0.20.0
nixos-25.11 0.18.0
- nixos-25.11-small 0.18.0
- nixpkgs-25.11-darwin 0.18.0

pkgs.python312Packages.pypdf

Pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files

nixos-25.11 6.6.0
- nixos-25.11-small 6.6.0
- nixpkgs-25.11-darwin 6.6.0

pkgs.python313Packages.pypdf

Pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files

nixos-unstable 6.7.0
- nixpkgs-unstable 6.7.0
- nixos-unstable-small 6.7.0
nixos-25.11 6.6.0
- nixos-25.11-small 6.6.0
- nixpkgs-25.11-darwin 6.6.0

pkgs.python314Packages.pypdf

Pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files

nixos-unstable 6.7.0
- nixpkgs-unstable 6.7.0
- nixos-unstable-small 6.7.0

pkgs.python312Packages.pypdf2

Pure-Python library built as a PDF toolkit

nixos-25.11 pypdf2-3.0.1
- nixos-25.11-small pypdf2-3.0.1
- nixpkgs-25.11-darwin pypdf2-3.0.1

pkgs.python312Packages.pypdf3

Pure-Python library built as a PDF toolkit

nixos-25.11 pypdf3-1.0.6
- nixos-25.11-small pypdf3-1.0.6
- nixpkgs-25.11-darwin pypdf3-1.0.6

pkgs.python313Packages.pypdf2

Pure-Python library built as a PDF toolkit

nixos-unstable pypdf2-3.0.1
- nixpkgs-unstable pypdf2-3.0.1
- nixos-unstable-small pypdf2-3.0.1
nixos-25.11 pypdf2-3.0.1
- nixos-25.11-small pypdf2-3.0.1
- nixpkgs-25.11-darwin pypdf2-3.0.1

pkgs.python313Packages.pypdf3

Pure-Python library built as a PDF toolkit

nixos-unstable pypdf3-1.0.6
- nixpkgs-unstable pypdf3-1.0.6
- nixos-unstable-small pypdf3-1.0.6
nixos-25.11 pypdf3-1.0.6
- nixos-25.11-small pypdf3-1.0.6
- nixpkgs-25.11-darwin pypdf3-1.0.6