CVE-2026-42607

CRITICAL EPSS 89.1%

Published May 11, 20261mo ago · Modified Jun 17, 20261w ago

9.1 CVSS 3.1

Critical

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, 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.

CVSS Details

Base Score

9.1

Exploitability

2.3

Impact

6.0

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required High

User Interaction None

Scope Changed

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS Exploit Probability

89.1% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-94 Improper Control of Generation of Code (Code Injection) Injection

References 2

github.com https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663
github.com https://github.com/getgrav/grav/security/advisories/GHSA-w48r-jppp-rcfw

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.