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    2 vulnerabilities found for grav-plugin-scheduler-webhook by Trilby Media

    CVE-2026-11430 (GCVE-0-2026-11430)

    Vulnerability from nvd – Published: 2026-08-07 19:02 – Updated: 2026-08-13 18:13
    VLAI
    Title
    Grav CMS Scheduler Webhook Authentication Bypass via Null Short-Circuit
    Summary
    Grav CMS's scheduler-webhook plugin contains an authentication bypass in the webhook token check. When the webhook feature is enabled but no webhookToken is configured, a compound conditional short-circuits and skips token validation, so an unauthenticated remote attacker who can reach POST /scheduler/webhook can trigger the operator's already-configured scheduled jobs by sending a single request. The primitive is triggering-existing-jobs, not attacker-chosen command execution: the attacker controls when the jobs run and which one runs (via ?job=), but does not control what the jobs do. Code execution follows only when the operator has configured a job that shells out, and even then the attacker controls timing rather than payload. Not a default-install issue: reaching the endpoint requires the separate scheduler-webhook GPM plugin to be installed, scheduler.modern.webhook.enabled to be true (default false), and no webhookToken to be configured; a stock Grav or Grav-Admin install exposes nothing here.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
    7.3 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-07 20:56 UTC
    CWE
    • CWE-303 - Incorrect Implementation of Authentication Algorithm
    Assigner
    References
    Impacted products
    Date Public
    2026-08-07 00:00
    Credits
    Saidakbarxon Maxsudxonov and Usmon Khudoyorov
    Show details on NVD website
    To clipboard 

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    CVE-2026-11430 (GCVE-0-2026-11430)

    Vulnerability from cvelistv5 – Published: 2026-08-07 19:02 – Updated: 2026-08-13 18:13
    VLAI
    Title
    Grav CMS Scheduler Webhook Authentication Bypass via Null Short-Circuit
    Summary
    Grav CMS's scheduler-webhook plugin contains an authentication bypass in the webhook token check. When the webhook feature is enabled but no webhookToken is configured, a compound conditional short-circuits and skips token validation, so an unauthenticated remote attacker who can reach POST /scheduler/webhook can trigger the operator's already-configured scheduled jobs by sending a single request. The primitive is triggering-existing-jobs, not attacker-chosen command execution: the attacker controls when the jobs run and which one runs (via ?job=), but does not control what the jobs do. Code execution follows only when the operator has configured a job that shells out, and even then the attacker controls timing rather than payload. Not a default-install issue: reaching the endpoint requires the separate scheduler-webhook GPM plugin to be installed, scheduler.modern.webhook.enabled to be true (default false), and no webhookToken to be configured; a stock Grav or Grav-Admin install exposes nothing here.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
    7.3 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-07 20:56 UTC
    CWE
    • CWE-303 - Incorrect Implementation of Authentication Algorithm
    Assigner
    References
    Impacted products
    Date Public
    2026-08-07 00:00
    Credits
    Saidakbarxon Maxsudxonov and Usmon Khudoyorov
    Show details on NVD website
    To clipboard 

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