CVE-2026-58656 (GCVE-0-2026-58656)
Vulnerability from cvelistv5 – Published: 2026-07-08 13:49 – Updated: 2026-07-08 15:44
VLAI
EPSS
VEX
Title
Grav API Plugin - Cross-Origin Admin Account Takeover via CORS Wildcard and JWT Query Parameter
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 15:44 UTC
CWE
- CWE-598 - Use of GET Request Method With Sensitive Query Strings
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/getgrav/grav/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/grav-api-plu… | third-party-advisory |
Impacted products
Date Public
2026-06-22 00:00
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