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TI-2026-24830 Aliases CVE-2026-32301GHSA-j77h-rr39-c552

Centrifugo: SSRF via unverified JWT claims interpolated into dynamic JWKS endpoint URL

Priority HIGH 79CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00293 22nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed centrifugo (centrifugal): 6.7.0github.com/centrifugal/centrifugo/v6 (Go): 6.7.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
centrifugalcentrifugobefore 6.7.06.7.0Patch availableCNA
—github.com/centrifugal/centrifugo/v6 (Go)before 6.7.06.7.0Patch availableGHSA-j77h-rr39-c552
—github.com/centrifugal/centrifugo (Go)up to 2.4.0—No fix listedGHSA-j77h-rr39-c552
—github.com/centrifugal/centrifugo/v3 (Go)up to 3.2.3—No fix listedGHSA-j77h-rr39-c552
—github.com/centrifugal/centrifugo/v4 (Go)up to 4.1.5—No fix listedGHSA-j77h-rr39-c552
—github.com/centrifugal/centrifugo/v5 (Go)up to 5.4.9—No fix listedGHSA-j77h-rr39-c552
  • centrifugo Vendorcentrifugal Affected before 6.7.0 Fixed in 6.7.0 Patch available CNA
  • github.com/centrifugal/centrifugo/v6 (Go) Vendor— Affected before 6.7.0 Fixed in 6.7.0 Patch available GHSA-j77h-rr39-c552
  • github.com/centrifugal/centrifugo (Go) Vendor— Affected up to 2.4.0 Fixed in — No fix listed GHSA-j77h-rr39-c552
  • github.com/centrifugal/centrifugo/v3 (Go) Vendor— Affected up to 3.2.3 Fixed in — No fix listed GHSA-j77h-rr39-c552
  • github.com/centrifugal/centrifugo/v4 (Go) Vendor— Affected up to 4.1.5 Fixed in — No fix listed GHSA-j77h-rr39-c552
  • github.com/centrifugal/centrifugo/v5 (Go) Vendor— Affected up to 5.4.9 Fixed in — No fix listed GHSA-j77h-rr39-c552

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:centrifugal:centrifugo:*:*:*:*:*:*:*:*before 6.7.0Vulnerablecentrifugal
  • cpe:2.3:a:centrifugal:centrifugo:*:*:*:*:*:*:*:* Versions before 6.7.0 Vulnerable ·centrifugal

Remediation

  • Fix · CNA centrifugo (centrifugal) Fixed in 6.7.0
  • Fix · GHSA-j77h-rr39-c552 github.com/centrifugal/centrifugo/v6 (Go) Fixed in 6.7.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-32301
  2. 2026-10-03 Alias added: GHSA-j77h-rr39-c552

References

Exploit 1

Advisory 1

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences