PT-2026-60145 · Getgrav · Grav

Gemstone-Source · Published 2026-07-15 · Updated 2026-07-15 · CVE-2026-61451

Mitre

CVSS v3.1

9.6

Critical

Base vector

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

The Grav API plugin (grav-plugin-api) before 1.0.4 does not validate the origin of the client-supplied admin base url field in the POST /api/v1/auth/forgot-password endpoint. The sanitizeHttpUrl() function only checks that the URL scheme is http/https and never verifies the host against the server's own origin, so an attacker can supply an arbitrary host. As a result, an unauthenticated attacker can cause the password reset email sent to a victim to contain a reset link pointing at an attacker-controlled server; when the victim follows the link, the valid reset token is disclosed to the attacker, enabling full account takeover. The vulnerable base URL can also be influenced via the Referer or Origin headers.

Exploit

Fix

Open Redirect

Weakness Enumeration

CWE-601

Related Identifiers

CVE-2026-61451

Affected Products

Grav

References · 3

• 🔥 https://github.com/getgrav/grav/security/advisories/GHSA-5xc4-j99p-cp4m · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-61451 · Security Note
• https://vulncheck.com/advisories/grav-before-password-reset-token-poisoning-via-admin-base-url · Note