CVE-2026-62386 (GCVE-0-2026-62386)

Vulnerability from cvelistv5 – Published: 2026-07-17 00:07 – Updated: 2026-07-23 19:22 X_Open Source
VLAI
Title
Grav < 1.0.0-rc.16 Authentication Bypass via token URL Parameter
Summary
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.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-23 19:21 UTC
CWE
  • CWE-598 - Use of GET Request Method With Sensitive Query Strings
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7011 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
getgrav grav Affected: 0 , < 1.0.0-rc.16 (semver)
Unaffected: 1.0.0-rc.16 (semver)
    cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-06-30 00:00
Credits
nicl4ssic
Show details on NVD website
To clipboard 

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