CVE-2026-42609

Published: Mag 11, 2026 Last Modified: Mag 11, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,1
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: high

Description

AI Translation Available

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.

269

Improper Privilege Management

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Gain Privileges Or Assume Identity
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: Medium
View CWE Details
285

Improper Authorization

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Access Control
Potential Impacts:
Read Application Data Read Files Or Directories Modify Application Data Modify Files Or Directories Gain Privileges Or Assume Identity Execute Unauthorized Code Or Commands
Applicable Platforms
Technologies: Database Server, Not Technology-Specific, Web Server
Likelihood of Exploit: High
View CWE Details
639

Authorization Bypass Through User-Controlled Key

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Bypass Protection Mechanism Gain Privileges Or Assume Identity
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
837

Improper Enforcement of a Single, Unique Action

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Other
Potential Impacts:
Varies By Context
Applicable Platforms
Technologies: Not Technology-Specific, Web Based, Web Server
View CWE Details
https://github.com/getgrav/grav/commit/5a12f9be8314682c8713…
https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663
https://github.com/getgrav/grav/commit/c66dfeb5ff679a166767…
https://github.com/getgrav/grav/commit/c66dfeb5ff679a1667678c6335eb9ff3255dfc47
https://github.com/getgrav/grav/commit/d904efc33e03ebb597af…
https://github.com/getgrav/grav/commit/d904efc33e03ebb597afde8d3368b28cf0423632
https://github.com/getgrav/grav/security/advisories/GHSA-rr…
https://github.com/getgrav/grav/security/advisories/GHSA-rr73-568v-28f8