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CVE-2026-28804

pypdf: Inefficient decoding of ASCIIHexDecode streams

CVSS 6.9 MEDIUMEPSS 0.4%CWE-407
pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, 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. This issue has been patched in version 6.7.5.
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/648c627d2657447dfb1773412af05a0a5103b98fhttps://github.com/py-pdf/pypdf/pull/3666https://github.com/py-pdf/pypdf/releases/tag/6.7.5https://github.com/py-pdf/pypdf/security/advisories/GHSA-9m86-7pmv-2852