CVE Watch22 sept 2026

CVE-2026-94456

Postiz generates security-sensitive credentials using `Math.random()` instead of a cryptographically secure source. The same helper is used

CVSS

9.1

Crítico

EPSS

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KEV

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Exploit Today

0-100

Publicado: 22 sept 2026 · Última mod.: 22 sept 2026 · CWE-330 · CWE-338 · CWE-341

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Postiz generates security-sensitive credentials using `Math.random()` instead of a cryptographically secure source. The same helper is used for OAuth access tokens, authorization codes, client secrets, organization API keys, and PKCE verifiers, meaning these credentials depend entirely on V8’s deterministic xorshift128+ PRNG state. An unauthenticated OAuth dynamic client registration endpoint exposes freshly generated client credentials, giving attackers enough consecutive PRNG output to reconstruct that internal state. Once recovered, they can deterministically derive past and future values produced by the same generator, potentially compromising credentials belonging to other users and organizations.

Referencias oficiales

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