CVE Watch3 nov 2026

CVE-2026-121553

Cotonti through 1.0.0 generates registration and email-change validation tokens with md5(microtime()), allowing attackers to bypass email-ow

CVSS

4.8

Medio

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 3 nov 2026 · Última mod.: 3 nov 2026 · CWE-338

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Cotonti through 1.0.0 generates registration and email-change validation tokens with md5(microtime()), allowing attackers to bypass email-ownership verification by predicting tokens. Attackers can derive the generation time from the HTTP Date header and compute candidate tokens offline. They then submit these tokens to the users.register.php validate handler to activate accounts or confirm email addresses they do not control.

Referencias oficiales

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