Timing Attack Vulnerability in Coolify by Coollabsio
CVE-2026-27882

4.8MEDIUM

Key Information:

Vendor

Coollabsio

Status
Coolify
Vendor
CVE Published:
30 June 2026

What is CVE-2026-27882?

Coolify, an open-source tool for managing servers, applications, and databases, is susceptible to a timing attack due to its use of a non-constant-time string comparison operator for webhook secret token validation. Attackers can exploit this vulnerability to infer the secret token by measuring variations in response times. This flaw has been addressed in version 4.0.0-beta.461, and users are urged to upgrade to enhance their security posture.

Affected Version(s)

coolify < 4.0.0-beta.461

References

https://github.com/coollabsio/coolify/security/advisories...
x_refsource_CONFIRM

CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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