GitHub Advisoryadvisory · PyPI

GHSA-cj93-chg6-vgv8 pypdf: Possible large memory usage for large offsets for layout mode text

MEDIUM Published 2026-06-12 Modified 2026-06-12 Official page ↗
Aliases
CVE-2026-48155
Ecosystem
PyPI
Packages
pypdf
Severity
Moderate
CVSS vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Weaknesses
CWE-400
Reviewed
2026-06-12

Affected packages

• PyPI pypdf: < 6.12.0 → fixed in 6.12.0

Description

Impact An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. Patches This has been fixed in pypdf==6.12.0. Workarounds If developers are unable to immediately upgrade, they should consider applying the changes from PR #3790.

Related

Alias · CVE (1)

  • CVE-2026-48155 pypdf is a free and open-source pure-python PDF library. vulnerability

Weakness · CWE (1)

  • CWE-400 Uncontrolled Resource Consumption weakness

References