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CVE-2026-72833 getgrav CVE debrief

The Grav API plugin (getgrav/grav-plugin-api) versions >= 1.0.6 and <= 1.0.11 contain a privilege escalation vulnerability. A scoped API key minted on a super-admin account bypasses its declared scope cap on four isSuperAdmin()-gated write endpoints (in GroupsController, AccountsConfigController, PreferencesController, and DashboardWidgetController). These endpoints authorize via a super-admin early-return that never invokes requirePermission()—the sole enforcement point of the scope cap—so a 'read-only'-scoped key (e.g. api.pages.read) can perform super-only write operations, including rewriting group ACL maps to grant super-admin privileges to arbitrary accounts. A leaked or delegated read-only CI/monitoring key can therefore gain full super-admin write capability. This vulnerability was fixed in version 1.0.13. Administrators and users of the Grav API plugin should verify and apply the vendor patch immediately, especially those with super-admin accounts or exposed 'read-only' API keys. The CVE record was published on 2026-08-14T12:16:46.670Z and has not been modified since then. The NVD entry is currently Deferred.

Vendor
getgrav
Product
grav
CVSS
HIGH 8.7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-14
Original CVE updated
2026-08-31
Advisory published
2026-08-14
Advisory updated
2026-08-31

Who should care

Administrators and users of the Grav API plugin, especially those with super-admin accounts or exposed 'read-only' API keys, should verify and apply the vendor patch (version 1.0.13) immediately. They should also restrict access to sensitive API endpoints, monitor for suspicious API activity, rotate and limit the scope of API keys, and implement additional logging and monitoring for API interactions.

Technical summary

The Grav API plugin (getgrav/grav-plugin-api) versions >= 1.0.6 and <= 1.0.11 contain a privilege escalation vulnerability. A scoped API key minted on a super-admin account bypasses its declared scope cap on four isSuperAdmin()-gated write endpoints (in GroupsController, AccountsConfigController, PreferencesController, and DashboardWidgetController). These endpoints authorize via a super-admin early-return that never invokes requirePermission()—the sole enforcement point of the scope cap—so a 'read-only'-scoped key (e.g. api.pages.read) can perform super-only write operations, including rewriting group ACL maps to grant super-admin privileges to arbitrary accounts.

Defensive priority

CVE-2026-72833 is rated HIGH with a CVSS score of 8.7; verify and apply vendor patches immediately.

Recommended defensive actions

  • Verify and apply the vendor patch (version 1.0.13) to the Grav API plugin.
  • Restrict access to sensitive API endpoints.
  • Monitor for suspicious API activity.
  • Rotate and limit the scope of API keys.
  • Implement additional logging and monitoring for API interactions.

Evidence notes

The Grav API plugin versions >= 1.0.6 and <= 1.0.11 contain a privilege escalation vulnerability. A scoped API key minted on a super-admin account bypasses its declared scope cap on four isSuperAdmin()-gated write endpoints. These endpoints authorize via a super-admin early-return that never invokes requirePermission()—the sole enforcement point of the scope cap—so a 'read-only'-scoped key can perform super-only write operations.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-72833 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-72833

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-72833 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-72833

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.