CVE-2021-47964

high

Description

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.

References

https://www.vulncheck.com/advisories/schlix-cms-6-remote-code-execution-via-core-blockmanager

https://www.schlix.com/downloads/schlix-cms/schlix-cms-v2.2.6-6.zip

https://www.schlix.com/

https://www.exploit-db.com/exploits/49838

Details

Source: Mitre, NVD

Published: 2026-05-15

Updated: 2026-05-18

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.8

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

Severity: High

CVSS v4

Base Score: 8.7

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

Severity: High

EPSS

EPSS: 0.00241