Vulnerability details
CVE-2026-65897
getgrav grav
Grav API Plugin 1.0.9 Privilege Escalation via Invitations groups
CVSS 4.0
8.7High
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.7High | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| 8.8High | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| getgrav | grav | v < 1.0.10 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://github.com/getgrav/grav-plugin-api/commit/f9438d4e71389b1041ac60b69b0b5714ecfa3bdd patch
- https://github.com/getgrav/grav/commit/345e79e3abf8c15f80e612a09f6643300071324b patch
- https://www.vulncheck.com/advisories/grav-api-plugin-privilege-escalation-via-invitations-groups third-party-advisory
- https://github.com/getgrav/grav/security/advisories/GHSA-m86m-jjcg-gcvv vendor-advisory
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Details
- Published
- 2026-07-23
- Last updated
- 2026-08-28
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.45%
Probability of exploitation in 30 days
39.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-269Improper Privilege Management