CVE-2015-8623

Estado: ModificadaAlta (8.8)—

La función User::matchEditToken en includes/User.php en MediaWiki en versiones anteriores a 1.23.12 y 1.24.x en versiones anteriores a 1.24.5 no realiza comparación de token en tiempo constante antes de regresar, lo que permite a atacantes remotos adivinar el token de edición y eludir la protección CSRF a través de un ataque de temporización, una vulnerabilidad diferente a CVE-2015-8624.

CVSS

Versión: 3.0
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Puntuación base: 8.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.73%
Percentil entre todas las CVEs puntuadas: 53
Fecha de la puntuación: 8/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Mediawiki — Mediawiki

CWE

CWE-352

Referencias

JSON original (NVD)

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      "value": "The User::matchEditToken function in includes/User.php in MediaWiki before 1.23.12 and 1.24.x before 1.24.5 does not perform token comparison in constant time before returning, which allows remote attackers to guess the edit token and bypass CSRF protection via a timing attack, a different vulnerability than CVE-2015-8624."
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