PT-2026-34562 · Pypi · Pypdf

Published 2026-04-15 · Updated 2026-06-04 · CVE-2026-41168

Positive Technologies (AI Summary)

CVSS v4.0

6.9

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.10.1

Description A flaw in the pure-python PDF library allows an attacker to craft a PDF that results in long runtimes. This is achieved by using cross-reference streams with incorrect large /Size values or object streams with incorrect large /N values.

Recommendations Update to version 6.10.1. As a temporary workaround, apply the changes from the patch manually.

Fix

Weakness Enumeration

CWE-834

Related Identifiers

CVE-2026-41168

GHSA-JJ6C-8H6C-HPPX

OPENSUSE-SU-2026:10658-1

Affected Products

Pypdf

References · 17

• https://github.com/py-pdf/pypdf/commit/62338e9d36419cf193ccec7331784f45df1d70b3 · Patch
• https://github.com/py-pdf/pypdf/security/advisories/GHSA-jj6c-8h6c-hppx · Vendor Advisory
• https://github.com/py-pdf/pypdf/pull/3733 · Patch
• https://osv.dev/vulnerability/GHSA-jj6c-8h6c-hppx · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-41168 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-41168 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-41168 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-41168 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-41168 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-APP-PYPI-CVE-2026-41168 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-41168 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10658-1 · Vendor Advisory
• https://github.com/py-pdf/pypdf · Note
• https://github.com/py-pdf/pypdf/releases/tag/6.10.1 · Note
• https://suse.com/security/cve/CVE-2026-41168 · Note