AUGUST 24, 2026
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Case File

CVE-2026-58656

HIGH · CVSS 7.5 EPSS 0.27% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-08 · Last synced 2026-08-07

CyberRota Analysis

AI-Generated

The Grav API plugin prior to version 1.0.0-rc.16 is vulnerable due to its acceptance of JWT tokens via the URL query parameter, combined with a permissive CORS policy that allows unauthenticated cross-origin API requests. This flaw enables attackers to exploit leaked JWT tokens to create super-admin accounts and exfiltrate sensitive data. Organizations using this plugin should prioritize remediation to prevent unauthorized access and data breaches.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-58656
Severity
HIGH
CVSS
7.5
EPSS
0.27%

Original NVD Description

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.