CVE-2026-27882 (GCVE-0-2026-27882)
Vulnerability from cvelistv5 – Published: 2026-06-30 14:26 – Updated: 2026-06-30 15:58
VLAI
EPSS
VEX
Title
Coolify: Timing Attack in GitLab Webhook Token Validation
Summary
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.
Severity
4.8 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-30 15:49 UTC
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/coollabsio/coolify/security/ad… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| coollabsio | coolify |
Affected:
< 4.0.0-beta.461
|
guessed |
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
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