CVE-2026-42607CWE-94

Grav: Remote Code Execution (RCE) via Malicious Plugin ZIP Upload in Direct Install Feature

Critical · published May 11, 2026

CVSS v3.1
9.1
EPSS
2%
Percentile
82.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02251 · 82.8th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-05-11T14:58Z
EPSS history
Timeline
  • 11 MAY 14:58Z
    Grav: Remote Code Execution (RCE) via Malicious Plugin ZIP Upload in Direct Install Feature
    cvelistv5