CVE-2025-66296 (GCVE-0-2025-66296)

Vulnerability from cvelistv5 – Published: 2025-12-01 21:03 – Updated: 2025-12-02 14:06
VLAI
Title
Grav vulnerable to Privilege Escalation in Grav Admin: Missing Username Uniqueness Check Allows Admin Account Takeover
Summary
Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users. A user with the create user permission can create a new account using the same username as an existing administrator account, set a new password/email, and then log in as that administrator. This effectively allows privilege escalation from limited user-manager permissions to full administrator access. This vulnerability is fixed in 1.8.0-beta.27.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-02 14:05 UTC
CWE
  • CWE-266 - Incorrect Privilege Assignment
Assigner
References
Impacted products
Vendor Product Version CPE status
getgrav grav Affected: < 1.8.0-beta.27
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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