CVE-2026-27882
Medium
Description
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.
SeverityMedium
CVSS4.8
Exploit probability—
ProductCoollabsio Coolify
PublishedJun 30, 2026
First seenJun 30, 2026
Weakness typeCWE-208CWE-208
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| coollabsio coolify | < 4.0.0-beta.461 | — |
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