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CVE PROGRAM SOURCE RECORD8.2 High

CVE-2026-62386

Grav < 1.0.0-rc.16 Authentication Bypass via token URL Parameter

Description

The Grav API plugin (getgrav/grav-plugin-api) before 1.0.0-rc.16 accepts JWT access tokens through the ?token= URL query parameter on every API route (JwtAuthenticator::extractBearerToken fallback). Because tokens are embedded in URLs, they are logged verbatim in web server access logs, leaked via the Referer header, stored in browser history, and captured by upstream proxy and CDN logs, exposing valid admin access tokens. A leaked token grants unauthorized API access, including reading configuration and user data, creating admin accounts, modifying system settings, and deleting pages.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

getgrav grav

Default version status: unaffected

  • 0 to < 1.0.0-rc.16affected
  • 1.0.0-rc.16unaffected

References