CVE-2026-32301: Centrifugo: SSRF via unverified JWT claims interpolated into dynamic JWKS endpoint URL

CVE-2026-32301 · Severity: low · CVSS 3.1 · Published 2026-03-26

Centrifugo: SSRF via unverified JWT claims interpolated into dynamic JWKS endpoint URL in github.com/centrifugal/centrifugo

Technologies: github.com/centrifugal/centrifugo (Go), github.com/centrifugal/centrifugo/v3 (Go), github.com/centrifugal/centrifugo/v4 (Go), github.com/centrifugal/centrifugo/v5 (Go), github.com/centrifugal/centrifugo/v6 (Go). Vendors: Go.

Quick answers

Is CVE-2026-32301 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-32301 being exploited in the wild.
How severe is CVE-2026-32301?
Low severity, with a CVSS score of 3.1, published 26 March 2026.
Which products and versions are affected?
github.com/centrifugal/centrifugo (Go) SEMVER:introduced=0, SEMVER:introduced=0,last_affected=2.4.0; github.com/centrifugal/centrifugo/v3 (Go) SEMVER:introduced=0, SEMVER:introduced=0,last_affected=3.2.3; github.com/centrifugal/centrifugo/v4 (Go) SEMVER:introduced=0, SEMVER:introduced=0,last_affected=4.1.5; github.com/centrifugal/centrifugo/v5 (Go) SEMVER:introduced=0, SEMVER:introduced=0,last_affected=5.4.9; and 1 more.
Is there a fix for CVE-2026-32301?
Yes. github.com/centrifugal/centrifugo/v6 (Go): upgrade to 6.7.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-32301?
Check whether you run github.com/centrifugal/centrifugo (Go), github.com/centrifugal/centrifugo/v3 (Go), github.com/centrifugal/centrifugo/v4 (Go) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • github.com/centrifugal/centrifugo/v6 (Go): upgrade to 6.7.0 or later
    go get github.com/centrifugal/centrifugo/v6@v6.7.0

Affected products

  • github.com/centrifugal/centrifugo (Go) SEMVER:introduced=0, SEMVER:introduced=0,last_affected=2.4.0
  • github.com/centrifugal/centrifugo/v3 (Go) SEMVER:introduced=0, SEMVER:introduced=0,last_affected=3.2.3
  • github.com/centrifugal/centrifugo/v4 (Go) SEMVER:introduced=0, SEMVER:introduced=0,last_affected=4.1.5
  • github.com/centrifugal/centrifugo/v5 (Go) SEMVER:introduced=0, SEMVER:introduced=0,last_affected=5.4.9
  • github.com/centrifugal/centrifugo/v6 (Go) SEMVER:introduced=0,fixed=6.7.0

Identifiers

  • CVE-2026-32301
  • GHSA-j77h-rr39-c552
  • GO-2026-4702

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