CVE-2026-42609
HIGH EPSS 36.7%
Published May 11, 20261mo ago · Modified Jun 17, 20261w ago
8.1 CVSS 3.1
Published May 11, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago
Description
Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a business logic vulnerability in the Grav Admin Panel allows a low-privileged user (with only user creation permissions) to overwrite existing accounts, including the primary administrator. By creating a new user with a username that already exists, the system updates the existing account's metadata and permissions instead of rejecting the request. This leads to a Denial of Service (DoS) on administrative functions and Privilege De-escalation of the root account. This vulnerability is fixed in 2.0.0-beta.2.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
36.7% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available
Weaknesses 4
CWE-269 Improper Privilege Management Authorization
CWE-285
CWE-639
CWE-837
Affected Products 2
References 4
- github.com https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663
- github.com https://github.com/getgrav/grav/commit/c66dfeb5ff679a1667678c6335eb9ff3255dfc47
- github.com https://github.com/getgrav/grav/commit/d904efc33e03ebb597afde8d3368b28cf0423632
- github.com https://github.com/getgrav/grav/security/advisories/GHSA-rr73-568v-28f8
Remediation
- github.com https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663
- github.com https://github.com/getgrav/grav/commit/c66dfeb5ff679a1667678c6335eb9ff3255dfc47
- github.com https://github.com/getgrav/grav/commit/d904efc33e03ebb597afde8d3368b28cf0423632
- github.com https://github.com/getgrav/grav/security/advisories/GHSA-rr73-568v-28f8