CVE-2026-42607

Published: May 11, 2026Modified: Jun 17, 2026Deferred

9.1

Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Exploitability: 2.3 / Impact: 6.0

Source: security-advisories@github.com (Secondary)

Description

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, an authenticated user with administrative privileges can achieve Remote Code Execution (RCE) by uploading a specially crafted ZIP file through the "Direct Install" tool. While the system attempts to block direct .php file uploads, it fails to inspect the contents of uploaded ZIP archives. Once a malicious plugin is extracted, it can execute arbitrary PHP code or drop a persistent web shell on the server. This vulnerability is fixed in 2.0.0-beta.2.

Related CWEs

CWE-94

Improper Control of Generation of Code ('Code Injection')

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

References (3)

https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663

Source: security-advisories@github.com

https://github.com/getgrav/grav/security/advisories/GHSA-w48r-jppp-rcfw

Source: security-advisories@github.com

https://github.com/getgrav/grav/security/advisories/GHSA-w48r-jppp-rcfw

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.