CVE-2026-48735

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.1, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing large XMP metadata, possibly with lots of unnecessary elements. This vulnerability is fixed in 6.12.1.

References

• https://github.com/py-pdf/pypdf/pull/3796
• https://github.com/py-pdf/pypdf/releases/tag/6.12.1
• https://github.com/py-pdf/pypdf/security/advisories/GHSA-wjqc-6w8f-h24c