CVE-2026-32301

Description

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 aud claim value that gets interpolated into the JWKS fetch URL before the token signature is verified, causing Centrifugo to make an outbound HTTP request to an attacker-controlled destination. This vulnerability is fixed in 6.7.0.

PUBLISHED Reserved 2026-03-11 | Published 2026-03-12 | Updated 2026-03-13 | Assigner GitHub_M

Problem types

CWE-918: Server-Side Request Forgery (SSRF)

Product status

References

github.com/...rifugo/security/advisories/GHSA-j77h-rr39-c552

cve.org (CVE-2026-32301)

nvd.nist.gov (CVE-2026-32301)

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