CVE-2026-58656

HIGH SEVERITY

CVSS Score & Metrics

Base Score

7.5 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N                                    

Vulnerability 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.

Vulnerability Details

Published Date

July 08, 2026

Last Modified

July 08, 2026

CWE ID

CWE-598

Source

NVD

Vendor

getgrav

Product

grav

External References

https://github.com/getgrav/grav/security/advisories/GHSA-hqm9-5xxw-4qxp
https://www.vulncheck.com/advisories/grav-api-plugin-cross-origin-admin-account-takeover-via-cors-wildcard-and-jwt-query-parameter
https://github.com/getgrav/grav/security/advisories/GHSA-hqm9-5xxw-4qxp

CVE-2026-58656

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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