PT-2026-2244 · Pypi+2 · Pypdf+2

N0Zom1Z0 · Published 2026-01-01 · Updated 2026-04-17 · CVE-2026-22690

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.6.0

Description pypdf is a free and open-source pure-python PDF library. Versions prior to 6.6.0 are susceptible to potential long runtimes when processing PDF files missing the /Root object but containing a large /Size value. An attacker can exploit this by creating a specially crafted PDF file that causes extended processing times, particularly in non-strict reading mode. This issue affects invalid files and can lead to a denial-of-service condition.

Recommendations Versions prior to 6.6.0 should be updated to version 6.6.0 or later.

Exploit

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2026-22690

GHSA-4XC4-762W-M6CG

OPENSUSE-SU-2026:10044-1

Affected Products

Debian

Red Os

Pypdf

References · 22

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22690.json · Exploit
• https://github.com/py-pdf/pypdf/commit/294165726b646bb7799be1cc787f593f2fdbcf45 · Patch
• https://github.com/py-pdf/pypdf/pull/3594 · Patch
• https://github.com/py-pdf/pypdf/security/advisories/GHSA-4xc4-762w-m6cg · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-22690 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-22690 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-22690 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10044-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-22690 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-22690 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-22690 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-22690 · Security Note
• https://osv.dev/vulnerability/GHSA-4xc4-762w-m6cg · Vendor Advisory
• https://github.com/py-pdf/pypdf/releases/tag/6.6.0 · Note
• https://github.com/py-pdf/pypdf · Note