CVE-2026-63407 (GCVE-0-2026-63407)

Vulnerability from cvelistv5 – Published: 2026-08-19 15:51 – Updated: 2026-08-25 02:12
VLAI
Title
Grav API Plugin: CORS 'Access-Control-Allow-Origin: *' on Authenticated API Responses
Summary
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.
Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 02:11 UTC
CWE
  • CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
getgrav grav-plugin-api Affected: < 1.0.0-rc.16
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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