VULNERABILITY INTELLIGENCE

CVE-2026-41168

CVSS score5.3 MEDIUM

EPSS probability0.30%

CISA KEVNot currently listed

Published2026-04-22

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Description

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.1 can craft a PDF which leads to long runtimes. This requires cross-reference streams with wrong large `/Size` values or object streams with wrong large `/N` values. This has been fixed in pypdf 6.10.1. As a workaround, one may apply the changes from the patch manually.

Weakness classification

security-advisories@github.com: CWE-834

Primary references

security-advisories@github.com — Patch
security-advisories@github.com — Issue Tracking, Patch
security-advisories@github.com — Product, Release Notes
security-advisories@github.com — Mitigation, Patch, Vendor Advisory