The getgrav/grav-plugin-api plugin before 1.0.13 contains an API-key scope cap bypass in the POST /reports/twig-content/allowlist endpoint (ReportsController). The endpoint enforces requirePermission('api.config.write') followed by a bare isSuperAdmin() check instead of requireSuper(). Because isSuperAdmin() reads access.api.super directly and never consults api_key_scopes, a least-privilege API key scoped to api.config.write minted on a super account passes the gate, allowing an attacker to append attacker-chosen tokens to the security.twig_sandbox allowlist (persisted to user/config/security.yaml). Widening the allowlist turns any subsequent Twig-in-content render into an SSTI/RCE sink.
https://www.vulncheck.com/advisories/grav-before-api-key-scope-cap-bypass-via-reportscontroller
https://github.com/getgrav/grav/security/advisories/GHSA-v5ph-7v92-wqm6
Published: 2026-08-14
Updated: 2026-08-14
Base Score: 8
Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:C/A:P
Severity: High
Base Score: 7.6
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Severity: High
Base Score: 7.2
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
Severity: High