What is GHSA-2rw7-x74f-jg35?

GHSA-2rw7-x74f-jg35 is a security advisory published by GitHub Security Advisories with Low severity. pypdf has a possible infinite loop when loading circular /Prev entries in cross-reference streams

Which CVE IDs does GHSA-2rw7-x74f-jg35 cover?

GHSA-2rw7-x74f-jg35 covers the following CVE IDs: CVE-2026-27628. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by GHSA-2rw7-x74f-jg35?

GHSA-2rw7-x74f-jg35 affects 1 product, including: pip/pypdf:\u003c 6.7.2.

GHSA-2rw7-x74f-jg35Low

pypdf has a possible infinite loop when loading circular /Prev entries in cross-reference streams

Vendor

GitHub Security Advisories

Published

February 25, 2026

Last Modified

February 25, 2026

🔗 CVE IDs covered (1)

CVE-2026-27628 →

📋 Description

Impact

An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading the file.

Patches

This has been fixed in pypdf==6.7.2.

Workarounds

If users cannot upgrade yet, consider applying the changes from PR #3655.

🎯 Affected products1

pip/pypdf:< 6.7.2

🔗 References (5)

https://github.com/py-pdf/pypdf/security/advisories/GHSA-2rw7-x74f-jg35
https://nvd.nist.gov/vuln/detail/CVE-2026-27628
https://github.com/py-pdf/pypdf/issues/3654
https://github.com/py-pdf/pypdf/commit/f0a462d36971cf077d74492a348d0d06fd60ea4d
https://github.com/advisories/GHSA-2rw7-x74f-jg35