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GHSA-j9wf-6r2x-hqmx v6

GHSA-j9wf-6r2x-hqmx is a security vulnerability in github.com/centrifugal/centrifugo/v6. A fix is available for github.com/centrifugal/centrifugo/v6 — see the affected versions and patch details below.

Centrifugo v6.6.0 dependency vulnerabilities

Also known asGO-2026-4528
Published
Feb 19, 2026
Updated
Feb 23, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Feb 23, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
🐹github.com/centrifugal/centrifugo/v6

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

Summary

Centrifugo v6.6.0 binary is compiled with Go 1.25.5 and
statically links github.com/quic-go/webtransport-go v0.9.0, having 7 known
CVEs

Go standard library — compiled with Go 1.25.5:

CVESeverityCVSSFixed In
CVE-2025-68121CRITICAL10.0Go 1.25.7, 1.24.13
CVE-2025-61726HIGH7.5Go 1.25.6, 1.24.12
CVE-2025-61728MEDIUM6.5Go 1.25.6, 1.24.12
CVE-2025-61730MEDIUM5.3Go 1.25.6, 1.24.12

Direct dependency github.com/quic-go/webtransport-go — pinned at v0.9.0 (go.mod line 34):

CVESeverityCVSSFixed In
CVE-2026-21434MEDIUM5.3webtransport-go v0.10.0
CVE-2026-21435MEDIUM5.3webtransport-go v0.10.0
CVE-2026-21438MEDIUM5.3webtransport-go v0.10.0

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/centrifugal/centrifugo/v6all versions6.6.1go get github.com/centrifugal/centrifugo/v6@v6.6.1

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/centrifugal/centrifugo/v6, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update github.com/centrifugal/centrifugo/v6 to 6.6.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-j9wf-6r2x-hqmx is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-j9wf-6r2x-hqmx can be triaged on real exposure rather than presence alone.

Tailored to GHSA-j9wf-6r2x-hqmx. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Summary Centrifugo v6.6.0 binary is compiled with **Go 1.25.5** and statically
O3 Security · Impact-Aware SCA

Is GHSA-j9wf-6r2x-hqmx in your dependencies?

O3 Security finds GHSA-j9wf-6r2x-hqmx across Go dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

GHSA-j9wf-6r2x-hqmx: v6 | O3 Security