CVE-2021-47964CWE-94

Schlix CMS 2.2.6-6 Remote Code Execution via core.blockmanager

High · published May 15, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
53.0
In the wild
Unconfirmed
What it is

Schlix CMS 2.2.6-6 contains a remote code execution vulnerability that allows authenticated attackers to execute arbitrary PHP code by uploading malicious extension packages through the block manager. Attackers can upload a crafted ZIP file containing PHP code in the packageinfo.inc file and trigger execution by accessing the About tab of the installed extension.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00710 · 53.0th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-05-15T18:36Z
EPSS history
Timeline
  • 15 MAY 18:36Z
    Schlix CMS 2.2.6-6 Remote Code Execution via core.blockmanager
    cvelistv5