CVE-2026-107162: fallo de gravedad alta en ExpressGateway express-gateway
Express Gateway through 1.16.11 OAuth 2.0 Refresh Token Validation Bypass
Publicada el
18Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.6
probabilidad de explotación
—
explotación observada
noninguna fuente lo reporta
Express Gateway through 1.16.11 contains an authentication bypass vulnerability in the OAuth 2.0 refresh_token grant that fails to validate the token secret or issuing client. Attackers with any valid client credentials and the identifier portion of another user's refresh token can obtain that user's access token and impersonate them against oauth2-protected APIs.
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Productos afectados
ExpressGateway · express-gatewayCVEs relacionadas — ExpressGateway express-gateway
En el mismo producto, de las más peligrosas a las menos.
CVE-2025-9096MEDIUMExpressGateway express-gateway REST Endpoint apps.js cross site scriptingEPSS 0.3%CVE-2025-9095MEDIUMExpressGateway express-gateway REST Endpoint users.js cross site scriptingEPSS 0.3%CVE-2026-107177HIGHExpress Gateway through 1.16.11 Hardcoded Default cipherKey Exposes OAuth TokensEPSS —
Referencias
https://github.com/ExpressGateway/express-gatewayhttps://github.com/ExpressGateway/express-gateway/blob/45612814d12f65889ef3bdf80b2ed7ab9b557736/lib/policies/oauth2/oauth2-server.js#L221-L247https://github.com/ExpressGateway/express-gateway/blob/45612814d12f65889ef3bdf80b2ed7ab9b557736/lib/services/tokens/token.service.js#L100-L136https://github.com/ExpressGateway/express-gateway/issues/1076https://www.vulncheck.com/advisories/express-gateway-through-1.16.11-oauth-2.0-refresh-token-validation-bypass