CVE-2026-62386
Grav < 1.0.0-rc.16 Authentication Bypass via token URL Parameter
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
The Grav API plugin (getgrav/grav-plugin-api) before 1.0.0-rc.16 accepts JWT access tokens through the ?token= URL query parameter on every API route (JwtAuthenticator::extractBearerToken fallback). Because tokens are embedded in URLs, they are logged verbatim in web server access logs, leaked via the Referer header, stored in browser history, and captured by upstream proxy and CDN logs, exposing valid admin access tokens. A leaked token grants unauthorized API access, including reading configuration and user data, creating admin accounts, modifying system settings, and deleting pages.
| CWE | CWE-598 |
| Vendor | getgrav |
| Product | grav |
| Published | Jul 17, 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.16
References
Credits
🔍 nicl4ssic