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
Detect and mitigate CVE-2026-28351 with GitLab Dependency Scanning
Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →