# Centrifugo's InsecureSkipTokenSignatureVerify flag silently disables JWT verification with no warning

Source: https://junglewise.ai/threats/centrifugo-s-insecureskiptokensignatureverify-flag-silently-disables-57153964  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-13  
License: CC BY 4.0 with a link back

Severity: low · CVSS 3.1 · Published 2026-03-13

Centrifugo's InsecureSkipTokenSignatureVerify flag silently disables JWT verification with no warning

Technologies: [github.com/centrifugal/centrifugo (Go)](https://junglewise.ai/threats/technologies/github-com-centrifugal-centrifugo), [github.com/centrifugal/centrifugo/v3 (Go)](https://junglewise.ai/threats/technologies/github-com-centrifugal-centrifugo-v3), [github.com/centrifugal/centrifugo/v4 (Go)](https://junglewise.ai/threats/technologies/github-com-centrifugal-centrifugo-v4), [github.com/centrifugal/centrifugo/v5 (Go)](https://junglewise.ai/threats/technologies/github-com-centrifugal-centrifugo-v5), [github.com/centrifugal/centrifugo/v6 (Go)](https://junglewise.ai/threats/technologies/github-com-centrifugal-centrifugo-v6). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Low severity, with a CVSS score of 3.1, published 13 March 2026.

**Which products and versions are affected?** github.com/centrifugal/centrifugo (Go) SEMVER:introduced=0,last_affected=2.4.0; github.com/centrifugal/centrifugo/v3 (Go) SEMVER:introduced=0,last_affected=3.2.3; github.com/centrifugal/centrifugo/v4 (Go) SEMVER:introduced=0,last_affected=4.1.5; github.com/centrifugal/centrifugo/v5 (Go) SEMVER:introduced=0,last_affected=5.4.9; and 1 more.

**Is there a fix for This vulnerability?** 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?** 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

  ```sh
  go get github.com/centrifugal/centrifugo/v6@v6.7.0
  ```


## Affected products

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

## Related threats

- [Centrifugo header spoofing via client-controlled emulation](https://junglewise.ai/threats/cve-2026-71485-centrifugo-header-spoofing-via-client-controlled-emulation)
- [Centrifugal Centrifugo authentication bypass in JWKS endpoint verification](https://junglewise.ai/threats/cve-2026-49998-centrifugal-centrifugo-authentication-bypass-in-jwks-endpoint)
- [GO-2026-4703 - Centrifugo's InsecureSkipTokenSignatureVerify flag silently disables JWT verification with no warning…](https://junglewise.ai/threats/go-2026-4703-centrifugo-s-insecureskiptokensignatureverify-flag-68acf45d)
- [Centrifugo: SSRF via unverified JWT claims interpolated into dynamic JWKS endpoint URL](https://junglewise.ai/threats/cve-2026-32301-centrifugo-ssrf-via-unverified-jwt-claims-interpolated-into)
- [GO-2026-4528 - Centrifugo v6.6.0 dependency vulnerabilities in github.com/centrifugal/centrifugo](https://junglewise.ai/threats/go-2026-4528-centrifugo-v6-6-0-dependency-vulnerabilities-in-github-com-0c9d853d)