CVE-2026-58656
Grav API Plugin - Cross-Origin Admin Account Takeover via CORS Wildcard and JWT Query Parameter
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
Grav API plugin before v1.0.0-rc.16 accepts JWT tokens via the ?token= URL query parameter and responds with Access-Control-Allow-Origin: *, allowing unauthenticated attackers to make fully authenticated cross-origin API requests from any malicious website. Attackers who obtain a leaked JWT token from access logs, proxy logs, browser history, or Referrer headers can create persistent backdoor super-admin accounts and exfiltrate sensitive configuration and user data.
| CWE | CWE-598 |
| Vendor | getgrav |
| Product | grav |
| Published | Jul 8, 2026 |
| Last Updated | Jul 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
getgrav / grav
0 ≤ 1.0.0-rc.15
References
Credits
🔍 nicl4ssic