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CVE PROGRAM SOURCE RECORD4.8 Medium

CVE-2026-27882

Coolify: Timing Attack in GitLab Webhook Token Validation

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

coollabsio coolify

  • < 4.0.0-beta.461affected

References