What is GHSA-3crg-w4f6-42mx?

GHSA-3crg-w4f6-42mx is a security advisory published by GitHub Security Advisories with Medium severity. pypdf: Manipulated XMP metadata entity declarations can exhaust RAM

Which CVE IDs does GHSA-3crg-w4f6-42mx cover?

GHSA-3crg-w4f6-42mx covers the following CVE IDs: CVE-2026-40260. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-3crg-w4f6-42mx?

GHSA-3crg-w4f6-42mx has a CVSS v3 base score of 5.3, published by GitHub Security Advisories.

Which products are affected by GHSA-3crg-w4f6-42mx?

GHSA-3crg-w4f6-42mx affects 1 product, including: pip/pypdf:\u003c 6.10.0.

GHSA-3crg-w4f6-42mxMediumCVSS 5.3

pypdf: Manipulated XMP metadata entity declarations can exhaust RAM

Vendor

GitHub Security Advisories

Published

April 10, 2026

Last Modified

April 24, 2026

🔗 CVE IDs covered (1)

CVE-2026-40260 →

📋 Description

Impact

An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the XMP metadata.

Patches

This has been fixed in pypdf==6.10.0.

Workarounds

If you cannot upgrade yet, consider applying the changes from PR #3724.

🎯 Affected products1

pip/pypdf:< 6.10.0

🔗 References (6)

https://github.com/py-pdf/pypdf/security/advisories/GHSA-3crg-w4f6-42mx
https://github.com/py-pdf/pypdf/pull/3724
https://github.com/py-pdf/pypdf/commit/b15a374e5ca648d4878e57c3b2c0551e7f8cc7f8
https://github.com/py-pdf/pypdf/releases/tag/6.10.0
https://nvd.nist.gov/vuln/detail/CVE-2026-40260
https://github.com/advisories/GHSA-3crg-w4f6-42mx