GHSA-7gw9-cf7v-778fMediumCVSS 6.5
pypdf: Manipulated FlateDecode predictor parameters can exhaust RAM
🔗 CVE IDs covered (1)
📋 Description
Impact
An attacker who uses this vulnerability can craft a PDF which leads to the RAM being exhausted. This requires accessing a stream compressed using /FlateDecode with a /Predictor unequal 1 and large predictor parameters.
Patches
This has been fixed in pypdf==6.10.2.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #3734.
🎯 Affected products1
- pip/pypdf:< 6.10.2
🔗 References (6)
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-7gw9-cf7v-778f
- https://github.com/py-pdf/pypdf/pull/3734
- https://github.com/py-pdf/pypdf/releases/tag/6.10.2
- https://nvd.nist.gov/vuln/detail/CVE-2026-41312
- https://github.com/py-pdf/pypdf/commit/ac734dab4eef92bcce50d503949b4d9887d89f11
- https://github.com/advisories/GHSA-7gw9-cf7v-778f