CVE-2026-63408
Grav API Plugin: JWT Access Token Accepted via `?token=` URL Query Parameter
- State
- Published
- Severity
- 7.5 High
- Published
- Aug 19, 2026
- Updated
- Aug 19, 2026
- Reserved
- Jul 16, 2026
Description
Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.0-rc.16, the Grav API plugin JwtAuthenticator::extractBearerToken() accepts a JWT from the token URL query parameter on every /api/v1 route, including state-changing endpoints. Request URLs consequently expose valid access tokens through Apache, proxy, and CDN logs, browser history, and Referer headers, allowing a party with access to those records to reuse the token with the owner's API privileges. This issue is fixed in version 1.0.0-rc.16.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | GitHub_M |
Weaknesses
- CWE-598 Use of GET Request Method With Sensitive Query Strings
Affected Products
| Product | Versions |
|---|---|
grav-plugin-apigetgrav |
|
References
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