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.
Published: 2026-05-15
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 18 May 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 15 May 2026 19:00:00 +0000

Type Values Removed Values Added
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.
Title Schlix CMS 2.2.6-6 Remote Code Execution via core.blockmanager
First Time appeared Schlix
Schlix cms
Weaknesses CWE-94
CPEs cpe:2.3:a:schlix:cms:2.1.8-7:*:*:*:*:*:*:*
cpe:2.3:a:schlix:cms:2.2.1-3:*:*:*:*:*:*:*
cpe:2.3:a:schlix:cms:2.2.7-2:*:*:*:*:*:*:*
cpe:2.3:a:schlix:cms:2.2.8-1:*:*:*:*:*:*:*
Vendors & Products Schlix
Schlix cms
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-18T16:02:50.199Z

Reserved: 2026-05-15T16:30:56.473Z

Link: CVE-2021-47964

cve-icon Vulnrichment

Updated: 2026-05-18T16:02:45.440Z

cve-icon NVD

Status : Deferred

Published: 2026-05-15T19:16:56.030

Modified: 2026-06-17T04:18:50.520

Link: CVE-2021-47964

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-15T20:30:06Z

Weaknesses