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.
Metrics
Affected Vendors & Products
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References
History
Thu, 12 Mar 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Centrifugo: SSRF via unverified JWT claims interpolated into dynamic JWKS endpoint URL | |
| Weaknesses | CWE-918 | |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-03-12T21:19:03.862Z
Reserved: 2026-03-11T21:16:21.658Z
Link: CVE-2026-32301
Vulnrichment
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OpenCVE Enrichment
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