CVE-2026-27191: fallo de gravedad alta en feathersjs feathers
Feathers: Open Redirect in OAuth callback enables account takeover
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.4epss 0.3%
Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript. Versions 5.0.39 and below the redirect query parameter is appended to the base origin without validation, allowing attackers to steal access tokens via URL authority injection. This leads to full account takeover, as the attacker obtains the victim's access token and can impersonate them. The application constructs the final redirect URL by concatenating the base origin with the user-supplied redirect parameter. This is exploitable when the origins array is configured and origin values do not end with /. An attacker can supply @attacker.com as the redirect value results in https://target.com@attacker.com#access_token=..., where the browser interprets attacker.com as the host, leading to full account takeover. This issue has been fixed in version 5.0.40.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Productos afectados
feathersjs · feathersCVEs relacionadas — feathersjs feathers
En el mismo producto, de las más peligrosas a las menos.
CVE-2023-37899HIGHfeathersjs socket handler allows abusing implicit toStringEPSS 1.2%CVE-2026-29792CRITICALFeathersjs has an OAuth Callback Account TakeoverEPSS 0.5%CVE-2026-27193HIGHFeathers exposes internal headers via unencrypted session cookieEPSS 0.4%CVE-2026-54335LOWFeathersjs: Prototype pollution in @feathersjs/commons _.merge via JSON-parsed __proto__EPSS 0.4%CVE-2026-27192HIGHFeathers has an origin validation bypass via prefix matchingEPSS 0.3%