CVE-2026-65897
Grav API Plugin versions before 1.0.10 fail to validate the groups field in InvitationsController::create(), allowing authenticated api.users.write callers to assign invited accounts to groups that grant api.super permissions.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Grav API Plugin versions before 1.0.10 fail to validate the groups field in InvitationsController::create(), allowing authenticated api.users.write callers to assign invited accounts to groups that grant api.super permissions. Attackers can create invitation records with elevated group membership, and when accepted, the new account gains full super-admin API access without the inviter holding those permissions.
- CVSS 4.0
- 8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.52% probability · 43th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-269
- Source
- disclosure@vulncheck.com
References
- https://github.com/getgrav/grav-plugin-api/commit/f9438d4e71389b1041ac60b69b0b5714ecfa3bdd
- https://github.com/getgrav/grav/commit/345e79e3abf8c15f80e612a09f6643300071324b
- https://github.com/getgrav/grav/security/advisories/GHSA-m86m-jjcg-gcvv
- https://www.vulncheck.com/advisories/grav-api-plugin-privilege-escalation-via-invitations-groups
- https://github.com/getgrav/grav/security/advisories/GHSA-m86m-jjcg-gcvv
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.