GHSA-f2v5-7jq9-h8cgMedium
pypdf: Manipulated RunLengthDecode streams can exhaust RAM
🔗 CVE IDs covered (1)
📋 Description
Impact
An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter.
Patches
This has been fixed in pypdf==6.7.4.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #3664.
🎯 Affected products1
- pip/pypdf:< 6.7.4
🔗 References (6)
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg
- https://nvd.nist.gov/vuln/detail/CVE-2026-28351
- https://github.com/py-pdf/pypdf/pull/3664
- https://github.com/py-pdf/pypdf/commit/f309c6003746414dc7b5048c19e6d879ff2dc858
- https://github.com/py-pdf/pypdf/releases/tag/6.7.4
- https://github.com/advisories/GHSA-f2v5-7jq9-h8cg