PT-2026-56445 · Getgrav · Grav

Nicl4Ssic · Published 2026-07-08 · Updated 2026-07-08 · CVE-2026-58656

NVD

CVSS v3.1

7.5

High

Base vector

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

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.

Fix

Weakness Enumeration

CWE-598

Related Identifiers

CVE-2026-58656

Affected Products

Grav

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-58656 · Security Note
• https://github.com/getgrav/grav/security/advisories/GHSA-hqm9-5xxw-4qxp · Vendor Advisory
• https://vulncheck.com/advisories/grav-api-plugin-cross-origin-admin-account-takeover-via-cors-wildcard-and-jwt-query-parameter · Note