GHSA-x3rh-gjgm-fmqcHigh
pypdf has possible large memory usage when parsing cross-reference streams
🔗 CVE IDs covered (1)
📋 Description
Impact
An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires opening a file with cross-reference streams.
Patches
This has been fixed in pypdf==6.21.3.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #4269.
🎯 Affected products1
- pip/pypdf:< 6.21.3
🔗 References (6)
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-x3rh-gjgm-fmqc
- https://nvd.nist.gov/vuln/detail/CVE-2026-119209
- https://github.com/py-pdf/pypdf/pull/4269
- https://github.com/py-pdf/pypdf/commit/a93fe3a901fd00af38f0a105c3ba7175fa72dcb4
- https://github.com/py-pdf/pypdf/releases/tag/6.21.3
- https://github.com/advisories/GHSA-x3rh-gjgm-fmqc