CVE-2026-115557: fallo crítico en Python Software Foundation CPython
Distrust compromised intermediate certificates in ssl module
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
28Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 9.4epss 0.5%
Python has added a denylist for known compromised certificates to the "ssl" module to ensure user safety even without certificate revocation configured. Known compromised certificates will automatically be rejected regardless of the SSLContext policy configuration.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Productos afectados
Python Software Foundation · CPythonCVEs relacionadas — Python Software Foundation CPython
En el mismo producto, de las más peligrosas a las menos.
CVE-2024-7592HIGHQuadratic complexity parsing cookies with backslashesEPSS 2.3%CVE-2024-6232HIGHRegular-expression DoS when parsing TarFile headersEPSS 2.2%CVE-2024-12254HIGHUnbounded memory buffering in SelectorSocketTransport.writelines()EPSS 1.9%CVE-2025-13836MEDIUMExcessive read buffering DoS in http.clientEPSS 1.7%CVE-2025-0938MEDIUMURL parser allowed square brackets in domain namesEPSS 1.6%CVE-2025-4138HIGHBypassing extraction filter to create symlinks to arbitrary targets outside extraction directoryEPSS 1.5%
Referencias
https://emudhra.we-have-a-problem.com/https://github.com/python/cpython/commit/21a50891ab4be2e9955239e625ae2b40c6b1854dhttps://github.com/python/cpython/commit/36cd295f32fc9ba19399e01abee91231440a41ddhttps://github.com/python/cpython/commit/48d9b2712cd52206c7a5882d0fdca4863ed65e93https://github.com/python/cpython/commit/7dd8b4736a1419750b94a388e6d158be15836fe6https://github.com/python/cpython/commit/98f0e4ed349f370dc8a00366da1a9797e11c9ed5https://github.com/python/cpython/commit/a17d9ef549008133eadf20689b1f4787902efe5bhttps://github.com/python/cpython/commit/af52b41afa4330fb38583db553631baa2f122f90https://github.com/python/cpython/commit/c7fd7edf7e0d122a3973cf676fae21b6aaa650a8https://github.com/python/cpython/commit/e2a9dd97ef9571c710ac0afaa834c8879aebce78https://github.com/python/cpython/commit/e4500d8a437ee5b988a5410cb9b59d177aa01370https://github.com/python/cpython/commit/e4f63e65a93cf44c14274aa987e644b8c003625e