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    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.

    Published:Jun 30, 2026
    Last Modified:Jun 30, 2026
    EPS:Jun 30, 2026
    EPSS Score:
    CVSS Score:4.8

    Affected Products

    Vendor
    Coollabsio
    Product
    Coolify

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-208 Observable Timing Discrepancy

    Related CVEs

    CVE-2026-15507 (CVSS 2.1) — A vulnerability was detected in coollabsio Coolify up to 4.1.1. The impacted element is an unknown function of…
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    CVE-2026-42201 (CVSS 3.3) — Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4…
    CVE-2026-34158 (CVSS 8.8) — Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4…
    CVE-2026-34170 (CVSS 4.3) — Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4…
    CVE-2026-34037 (CVSS 9.9) — Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4…
    CVE-2026-34048 (CVSS 9.9) — Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4…
    CVE-2026-34057 (CVSS 8.8) — Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4…
    CVE-2026-42143 (CVSS 8.8) — Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4…
    CVE-2026-42147 (CVSS 4.9) — Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High