CVE-2026-28351

Manipulated RunLengthDecode streams can exhaust RAM

CVSS 6.9 MEDIUMEPSS 0.4%CWE-400

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.4, 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. This has been fixed in pypdf 6.7.4. As a workaround, consider applying the changes from PR #3664.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Productos afectados

py-pdf · pypdf

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Referencias

https://github.com/py-pdf/pypdf/commit/f309c6003746414dc7b5048c19e6d879ff2dc858 https://github.com/py-pdf/pypdf/pull/3664 https://github.com/py-pdf/pypdf/releases/tag/6.7.4 https://github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg