NIXPKGS-2026-2372

GitHub issue published 8 hours ago

python3Packages.pypdf: security issues < 6.15.0

Permalink CVE-2026-71870

4.8 MEDIUM

CVSS version (CVSS): 4.0
Attack Vector (AV): Local (L)
Attack Complexity (AC): Low (L)
Attack Requirement (AT): None (N)
Privileges Required (PR): None (N)
User Interaction (UI): Passive (P)
Vulnerable System Impact Confidentiality (VC): None (N)
Vulnerable System Impact Integrity (VI): None (N)
Vulnerable System Impact Availability (VA): Low (L)
Subsequent System Impact Confidentiality (SC): None (N)
Subsequent System Impact Integrity (SI): None (N)
Subsequent System Impact Availability (SA): None (N)
Modified Attack Vector (MAV): Local (L)
Modified Attack Complexity (MAC): Low (L)
Modified Attack Requirement (MAT): None (N)
Modified Privileges Required (MPR): None (N)
Modified User Interaction (MUI): Passive (P)
Modified Vulnerable System Impact Confidentiality (MVC): None (N)
Modified Vulnerable System Impact Integrity (MVI): None (N)
Modified Vulnerable System Impact Availability (MVA): Low (L)
Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
Modified Subsequent System Impact Integrity (MSI): Negligible (N)
Modified Subsequent System Impact Availability (MSA): Negligible (N)
Safety (S): Not Defined (X)
Automatable (AU): Not Defined (X)
Recovery (R): Not Defined (X)
Value Density (V): Not Defined (X)
Vulnerability Response Effort (RE): Not Defined (X)
Provider Urgency (U): Not Defined (X)
Confidentiality Req. (CR): Not Defined (X)
Integrity Req. (IR): Not Defined (X)
Availability Req. (AR): Not Defined (X)
Exploit Maturity (E): Not Defined (X)

updated 8 hours ago by @LeSuisse Activity log

Created suggestion 2 days, 18 hours ago
@LeSuisse ignored
7 packages
- capypdf
- python313Packages.pypdf2
- python313Packages.pypdf3
- python314Packages.pypdf2
- python314Packages.pypdf3
- python313Packages.pypdfium2
- python314Packages.pypdfium2
8 hours ago
@LeSuisse accepted 8 hours ago
@LeSuisse published on GitHub 8 hours ago

pypdf: Possible large memory usage for large /ToUnicode streams

pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause large memory consumption when pypdf/_cmap.py function parse_bfrange parses unusually large source-code or destination-string tokens in a font /ToUnicode CMap during text extraction. This issue is fixed in 6.15.0.

References

https://github.com/py-pdf/pypdf/security/advisories/GHSA-fp3f-mc75-235c x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3944 x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/afba8080e19d29a3c256a742b340995e695b35aa x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.15.0 x_refsource_MISC

Affected products

pypdf

==< 6.15.0

Matching in nixpkgs

pkgs.python313Packages.pypdf

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

nixos-unstable 6.14.2
- nixpkgs-unstable 6.14.2
- nixos-unstable-small 6.14.2
nixos-26.05 6.14.2
- nixos-26.05-small 6.14.2
- nixpkgs-26.05-darwin 6.14.2

pkgs.python314Packages.pypdf

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

nixos-unstable 6.14.2
- nixpkgs-unstable 6.14.2
- nixos-unstable-small 6.14.2
nixos-26.05 6.14.2
- nixos-26.05-small 6.14.2
- nixpkgs-26.05-darwin 6.14.2

Ignored packages (7)

pkgs.capypdf

Fully color managed PDF generation library

nixos-unstable 0.21.0
- nixpkgs-unstable 0.21.0
- nixos-unstable-small 0.21.0
nixos-26.05 0.20.0
- nixos-26.05-small 0.20.0
- nixpkgs-26.05-darwin 0.20.0

pkgs.python313Packages.pypdf2

Pure-Python library built as a PDF toolkit

nixos-unstable 3.0.1
- nixpkgs-unstable 3.0.1
- nixos-unstable-small 3.0.1
nixos-26.05 3.0.1
- nixos-26.05-small 3.0.1
- nixpkgs-26.05-darwin 3.0.1

pkgs.python313Packages.pypdf3

Pure-Python library built as a PDF toolkit

nixos-unstable 1.0.6
- nixpkgs-unstable 1.0.6
- nixos-unstable-small 1.0.6
nixos-26.05 1.0.6
- nixos-26.05-small 1.0.6
- nixpkgs-26.05-darwin 1.0.6

pkgs.python314Packages.pypdf2

Pure-Python library built as a PDF toolkit

nixos-unstable 3.0.1
- nixpkgs-unstable 3.0.1
- nixos-unstable-small 3.0.1
nixos-26.05 3.0.1
- nixos-26.05-small 3.0.1
- nixpkgs-26.05-darwin 3.0.1

pkgs.python314Packages.pypdf3

Pure-Python library built as a PDF toolkit

nixos-unstable 1.0.6
- nixpkgs-unstable 1.0.6
- nixos-unstable-small 1.0.6
nixos-26.05 1.0.6
- nixos-26.05-small 1.0.6
- nixpkgs-26.05-darwin 1.0.6

pkgs.python313Packages.pypdfium2

Python bindings to PDFium

nixos-unstable 5.7.0
- nixpkgs-unstable 5.7.0
- nixos-unstable-small 5.7.0
nixos-26.05 5.7.0
- nixos-26.05-small 5.7.0
- nixpkgs-26.05-darwin 5.7.0

pkgs.python314Packages.pypdfium2

Python bindings to PDFium

nixos-unstable 5.7.0
- nixpkgs-unstable 5.7.0
- nixos-unstable-small 5.7.0
nixos-26.05 5.7.0
- nixos-26.05-small 5.7.0
- nixpkgs-26.05-darwin 5.7.0

Package maintainers

@javaes Jan van Esdonk <jan+dev@vanesdonk.de>

Permalink CVE-2026-71852

4.8 MEDIUM

CVSS version (CVSS): 4.0
Attack Vector (AV): Local (L)
Attack Complexity (AC): Low (L)
Attack Requirement (AT): None (N)
Privileges Required (PR): None (N)
User Interaction (UI): Passive (P)
Vulnerable System Impact Confidentiality (VC): None (N)
Vulnerable System Impact Integrity (VI): None (N)
Vulnerable System Impact Availability (VA): Low (L)
Subsequent System Impact Confidentiality (SC): None (N)
Subsequent System Impact Integrity (SI): None (N)
Subsequent System Impact Availability (SA): None (N)
Modified Attack Vector (MAV): Local (L)
Modified Attack Complexity (MAC): Low (L)
Modified Attack Requirement (MAT): None (N)
Modified Privileges Required (MPR): None (N)
Modified User Interaction (MUI): Passive (P)
Modified Vulnerable System Impact Confidentiality (MVC): None (N)
Modified Vulnerable System Impact Integrity (MVI): None (N)
Modified Vulnerable System Impact Availability (MVA): Low (L)
Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
Modified Subsequent System Impact Integrity (MSI): Negligible (N)
Modified Subsequent System Impact Availability (MSA): Negligible (N)
Safety (S): Not Defined (X)
Automatable (AU): Not Defined (X)
Recovery (R): Not Defined (X)
Value Density (V): Not Defined (X)
Vulnerability Response Effort (RE): Not Defined (X)
Provider Urgency (U): Not Defined (X)
Confidentiality Req. (CR): Not Defined (X)
Integrity Req. (IR): Not Defined (X)
Availability Req. (AR): Not Defined (X)
Exploit Maturity (E): Not Defined (X)

updated 8 hours ago by @LeSuisse Activity log

Created suggestion 2 days, 18 hours ago
@LeSuisse ignored
7 packages
- capypdf
- python313Packages.pypdf2
- python313Packages.pypdf3
- python314Packages.pypdf2
- python314Packages.pypdf3
- python313Packages.pypdfium2
- python314Packages.pypdfium2
8 hours ago
@LeSuisse accepted 8 hours ago
@LeSuisse published on GitHub 8 hours ago

pypdf: Possible long runtimes/large memory usage for large CID font width ranges

pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause long runtimes and large memory consumption when pypdf/_font.py function Font._collect_cid_character_widths expands unusually large CID font /W width ranges or excessive width entries during text extraction. This issue is fixed in 6.15.0.