What is GHSA-2q4j-m29v-hq73?

GHSA-2q4j-m29v-hq73 is a security advisory published by GitHub Security Advisories with Medium severity. pypdf has possible Infinite Loop when processing outlines/bookmarks

Which CVE IDs does GHSA-2q4j-m29v-hq73 cover?

GHSA-2q4j-m29v-hq73 covers the following CVE IDs: CVE-2026-24688. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by GHSA-2q4j-m29v-hq73?

GHSA-2q4j-m29v-hq73 affects 1 product, including: pip/pypdf:\u003c 6.6.2.

GHSA-2q4j-m29v-hq73Medium

pypdf has possible Infinite Loop when processing outlines/bookmarks

Vendor

GitHub Security Advisories

Published

January 26, 2026

Last Modified

January 29, 2026

🔗 CVE IDs covered (1)

CVE-2026-24688 →

📋 Description

Impact

An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires accessing the outlines/bookmarks.

Patches

This has been fixed in pypdf 6.6.2.

Workarounds

If projects cannot upgrade yet, consider applying the changes from PR #3610.

🎯 Affected products1

pip/pypdf:< 6.6.2

🔗 References (6)

https://github.com/py-pdf/pypdf/security/advisories/GHSA-2q4j-m29v-hq73
https://github.com/py-pdf/pypdf/pull/3610
https://github.com/py-pdf/pypdf/commit/b1282f8dcdc1a7b41ceab6740ffddfdf31b1fec1
https://github.com/py-pdf/pypdf/releases/tag/6.6.2
https://nvd.nist.gov/vuln/detail/CVE-2026-24688
https://github.com/advisories/GHSA-2q4j-m29v-hq73