CVE-2026-67242
RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.9 and 4.3.3, OAuth2 isinteger(Exp) guard skips token-expiry checks for fl
CVSS
—
Sin CVSS
EPSS
—
KEV
—
Exploit Today
0
0-100
Publicado: 25 sept 2026 · Última mod.: 25 sept 2026 · CWE-613
Sin historial EPSS suficiente todavía.
RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.9 and 4.3.3, OAuth2 isinteger(Exp) guard skips token-expiry checks for float exp. validatetokenexpiry/1 (lines 208-214) and expirytimestamp/1 (138-144) both guard with 'when isinteger(Exp)' and fall through to ok/never for float values. josejwt:verify validates only the signature, not exp. With float exp, no expiry validation occurs anywhere in the If the IdP emits exp as a JSON float (RFC 7519 permits fractional NumericDate), both the login-time expiry check and the mid-connection disconnect timer are silently skipped , an already-expired token is accepted, and connections never time OAuth2 backend enabled IdP emits float exp (uncommon; mainstream IdPs emit integers) Attacker possesses a previously-valid signed. This issue is fixed in versions 4.2.9 and 4.3.3.
- github.comhttps://github.com/rabbitmq/rabbitmq-server/commit/d10a369a96658d0fba1050bd43c732e58fcf28fd
- github.comhttps://github.com/rabbitmq/rabbitmq-server/commit/f189a8824c9efbce46bd9438fcdbda4521cfc923
- github.comhttps://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9
- github.comhttps://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3
- github.comhttps://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-rrj4-g94f-rqj9