GHSA-9m86-7pmv-2852Medium
pypdf vulnerable to inefficient decoding of ASCIIHexDecode streams
🔗 CVE IDs covered (1)
📋 Description
Impact
An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /ASCIIHexDecode filter.
Patches
This has been fixed in pypdf==6.7.5.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #3666.
🎯 Affected products1
- pip/pypdf:< 6.7.5
🔗 References (6)
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-9m86-7pmv-2852
- https://github.com/py-pdf/pypdf/pull/3666
- https://github.com/py-pdf/pypdf/releases/tag/6.7.5
- https://nvd.nist.gov/vuln/detail/CVE-2026-28804
- https://github.com/py-pdf/pypdf/commit/648c627d2657447dfb1773412af05a0a5103b98f
- https://github.com/advisories/GHSA-9m86-7pmv-2852