CVE-2026-28351: pypdf: Manipulated RunLengthDecode streams can exhaust RAM
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.
References
- github.com/advisories/GHSA-f2v5-7jq9-h8cg
- github.com/py-pdf/pypdf
- github.com/py-pdf/pypdf/commit/f309c6003746414dc7b5048c19e6d879ff2dc858
- github.com/py-pdf/pypdf/pull/3664
- github.com/py-pdf/pypdf/releases/tag/6.7.4
- github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg
- nvd.nist.gov/vuln/detail/CVE-2026-28351
Code Behaviors & Features
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