What is GHSA-cj93-chg6-vgv8?

GHSA-cj93-chg6-vgv8 is a security advisory published by GitHub Security Advisories with Medium severity. pypdf: Possible large memory usage for large offsets for layout mode text

Which CVE IDs does GHSA-cj93-chg6-vgv8 cover?

GHSA-cj93-chg6-vgv8 covers the following CVE IDs: CVE-2026-48155. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by GHSA-cj93-chg6-vgv8?

GHSA-cj93-chg6-vgv8 affects 1 product, including: pip/pypdf:\u003c 6.12.0.

GHSA-cj93-chg6-vgv8Medium

pypdf: Possible large memory usage for large offsets for layout mode text

Vendor

GitHub Security Advisories

Published

June 12, 2026

Last Modified

June 12, 2026

🔗 CVE IDs covered (1)

CVE-2026-48155 →

📋 Description

Impact

An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets.

Patches

This has been fixed in pypdf==6.12.0.

Workarounds

If developers are unable to immediately upgrade, they should consider applying the changes from PR #3790.

🎯 Affected products1

pip/pypdf:< 6.12.0

🔗 References (5)

https://github.com/py-pdf/pypdf/security/advisories/GHSA-cj93-chg6-vgv8
https://nvd.nist.gov/vuln/detail/CVE-2026-48155
https://github.com/py-pdf/pypdf/pull/3790
https://github.com/py-pdf/pypdf/releases/tag/6.12.0
https://github.com/advisories/GHSA-cj93-chg6-vgv8