CVSS 3.1
9.3 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:NCVE-2026-32301
Critical (9.3) in centrifugal centrifugo. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/centrifugal/centrifugo/v6 6.7.0.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-31)
- CWE
- CWE-918
- Published
- Modified
- Record from
- the NVD, synced
Affected
- centrifugal:centrifugo
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-j77h-rr39-c552 | Go | github.com/centrifugal/centrifugo/v6 | <6.7.0 | 6.7.0 |
| GHSA-j77h-rr39-c552 | Go | github.com/centrifugal/centrifugo | <=2.4.0 | no fix published |
| GHSA-j77h-rr39-c552 | Go | github.com/centrifugal/centrifugo/v3 | <=3.2.3 | no fix published |
| GHSA-j77h-rr39-c552 | Go | github.com/centrifugal/centrifugo/v4 | <=4.1.5 | no fix published |
| GHSA-j77h-rr39-c552 | Go | github.com/centrifugal/centrifugo/v5 | <=5.4.9 | no fix published |
| GO-2026-4702 | Go | github.com/centrifugal/centrifugo | all versions | no fix published |
| GO-2026-4702 | Go | github.com/centrifugal/centrifugo/v3 | all versions | no fix published |
| GO-2026-4702 | Go | github.com/centrifugal/centrifugo/v4 | all versions | no fix published |
| GO-2026-4702 | Go | github.com/centrifugal/centrifugo/v5 | all versions | no fix published |
| GO-2026-4702 | Go | github.com/centrifugal/centrifugo/v6 | <6.7.0 | 6.7.0 |