CVE-2026-32301CRITICAL 9.3EPSS p16.9%
CVE-2026-32301CVE-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.
Scoring
| CVSS 3.1 | 9.3 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N |
| EPSS | 0.26% probability of exploitation · percentile 16.9% · 2026-06-19T12:03:05Z |
| Published | 2026-03-13 |
| Last modified | 2026-03-18 |
Underlying weaknesses· 1
References
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Server-Side Request Forgery (SSRF)cwe-918 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.