CVE-2026-27882

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.461, the GitLab webhook endpoint uses a non-constant-time string comparison operator (!==) to validate the webhook secret token. This implementation is vulnerable to timing attacks, which could allow an attacker to gradually discover the secret token by measuring response time differences. This vulnerability is fixed in 4.0.0-beta.461.

• CWE-208

• https://github.com/coollabsio/coolify/security/advisories/GHSA-x525-46rq-mr8c
• https://github.com/coollabsio/coolify/security/advisories/GHSA-x525-46rq-mr8c

Published

Jun 30, 2026

Last Modified

Jun 30, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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