CVE-2026-63407Grav API Plugin: CORS 'Access-Control-Allow-Origin: *' on Authenticated API Responses
Updated under an hour ago ()
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It affects getgrav grav-plugin-api. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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 CorsMiddleware returns Access-Control-Allow-Origin: * and permissive OPTIONS responses for authenticated /api/v1 endpoints. JavaScript from any origin can submit an attacker-obtained JWT through the Authorization or X-API-Token header, read the authenticated response, and perform write operations with the token owner's privileges, enabling data exfiltration and account modification. This issue is fixed in version 1.0.0-rc.16.
- CVSS
- 8.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
- Weakness (CWE)
- CWE-942
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Aug 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
getgrav grav-plugin-api getgrav:grav_plugin_api (from the name) | before 1.0.0-rc.16 | CNA record |
References
- https://github.com/getgrav/grav/security/advisories/GHSA-93px-98wh-6fj2x-refsource-confirm
- https://github.com/getgrav/grav-plugin-api/commit/56ae2ca3bf36c8299a4b3d376c6a20e8c0ed5ba9x-refsource-misc
- https://github.com/getgrav/grav-plugin-api/releases/tag/1.0.0-rc.16x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.