CVE-2026-32301

CRITICAL EPSS 17.1%
Published Mar 13, 20263mo ago · Modified Jun 17, 20262w ago
9.3 CVSS 3.1
Critical
Find Similar
Published Mar 13, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
9.3
Exploitability
3.9
Impact
4.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality High
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
17.1% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

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

Affected Products 1

VendorProductVersionRange
centrifugalcentrifugo* <6.7.0

References 1

  • github.com https://github.com/centrifugal/centrifugo/security/advisories/GHSA-j77h-rr39-c552
    ExploitMitigationVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.