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    2 vulnerabilities found for Grav CMS scheduler-webhook plugin by Trilby Media

    CVE-2026-57852 (GCVE-0-2026-57852)

    Vulnerability from nvd – Published: 2026-07-20 22:09 – Updated: 2026-07-21 14:55
    VLAI
    Title
    Authentication Bypass via Null Short-Circuit in Grav CMS Scheduler Webhook Token Check
    Summary
    Grav CMS scheduler-webhook plugin contains an authentication bypass vulnerability that allows unauthenticated remote attackers to trigger configured scheduled jobs by exploiting a short-circuit logic flaw in the webhook token validation. Attackers can send a single unauthenticated POST request to the scheduler webhook endpoint to execute all configured scheduled jobs or target a specific job, causing unintended execution of operator-defined commands under the web server process user.
    Severity
    5.6 (Medium)
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
    6.3 (Medium)
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-303 - Incorrect Implementation of Authentication Algorithm
    Assigner
    References
    Impacted products
    Vendor Product Version
    Trilby Media Grav CMS scheduler-webhook plugin Affected: 0 , ≤ 1.1.3 (semver)
    Affected: 0 , ≤ 2.0.8 (semver)
    		Create a notification for this product.
    Date Public
    2026-07-20 22:10
    Credits
    Saidakbarxon Maxsudxonov
    Show details on NVD website
    To clipboard 

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    CVE-2026-57852 (GCVE-0-2026-57852)

    Vulnerability from cvelistv5 – Published: 2026-07-20 22:09 – Updated: 2026-07-21 14:55
    VLAI
    Title
    Authentication Bypass via Null Short-Circuit in Grav CMS Scheduler Webhook Token Check
    Summary
    Grav CMS scheduler-webhook plugin contains an authentication bypass vulnerability that allows unauthenticated remote attackers to trigger configured scheduled jobs by exploiting a short-circuit logic flaw in the webhook token validation. Attackers can send a single unauthenticated POST request to the scheduler webhook endpoint to execute all configured scheduled jobs or target a specific job, causing unintended execution of operator-defined commands under the web server process user.
    Severity
    5.6 (Medium)
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
    6.3 (Medium)
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-303 - Incorrect Implementation of Authentication Algorithm
    Assigner
    References
    Impacted products
    Vendor Product Version
    Trilby Media Grav CMS scheduler-webhook plugin Affected: 0 , ≤ 1.1.3 (semver)
    Affected: 0 , ≤ 2.0.8 (semver)
    		Create a notification for this product.
    Date Public
    2026-07-20 22:10
    Credits
    Saidakbarxon Maxsudxonov
    Show details on NVD website
    To clipboard 

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