CVE-2026-49998: Improper Verification of Cryptographic Signature

Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.1, Centrifugo dynamic JWKS endpoint verification could reuse a key for one allowed issuer to verify a JWT for another allowed issuer because the JWKS cache and singleflight lookup were keyed only by JWT header kid, not...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the fetchKey function. An attacker can cause the server to make arbitrary HTTP requests to attacker-controlled destinations by crafting a JWT with malicious claim values that are interpolated into th...

CVE-2026-32301: Server-Side Request Forgery (SSRF)

Centrifugo is an open-source scalable real-time messaging server. Prior to 6.7.0, Centrifugo is vulnerable to Server-Side Request Forgery SSRF when configured with a dynamic JWKS endpoint URL using template variables e.g. tenant. An unauthenticated attacker can craft a JWT with a malicious iss or...

PT-2026-25082

Name of the Vulnerable Software and Affected Versions Centrifugo versions prior to 6.7.0 Description Centrifugo is susceptible to a Server-Side Request Forgery SSRF condition when configured with a dynamic JWKS endpoint URL that utilizes template variables, such as tenant. An unauthenticated...