CVE-2026-86193: Incorrect Authorization in getgrav grav-plugin-api
Description
A vulnerability in grav-plugin-api before version 1.0.20 allows non-super user managers with specific API permissions to modify super-admin accounts. This occurs due to improper validation of group-inherited super permissions in user-management guards. Exploiting this flaw, attackers can patch password fields on super-admin accounts, potentially gaining full administrative control.
CVSS v4.0
Score 8.7high
Affected software
getgrav
grav-plugin-api
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86193 describes an incorrect authorization vulnerability in grav-plugin-api versions prior to 1.0.20. The plugin fails to properly validate group-inherited super permissions within user-management guards. As a result, users who are not super administrators but possess api.access and api.users.write permissions can modify super-admin accounts, including patching password fields. This flaw enables privilege escalation to full administrative control over the affected system.
Potential Impact
An attacker with api.access and api.users.write permissions can escalate privileges by modifying super-admin accounts, including changing their passwords. This leads to full administrative control over the grav-plugin-api instance, posing a significant security risk.
Mitigation Recommendations
Upgrade grav-plugin-api to version 1.0.20 or later, where this authorization issue has been fixed. No other mitigation guidance is provided, and patch status is confirmed by the affectedVersions field indicating versions before 1.0.20 are vulnerable.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-05T11:51:31.102Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a9c0d21acd9273b49d9713d
Added to database: 09/05/2026, 12:37:53 UTC
Last enriched: 09/15/2026, 01:12:18 UTC
Last updated: 10/18/2026, 18:48:24 UTC
Views: 76
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