CVE-2021-47964

HIGH

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

Title source: CVE List
Search associated code STIX 2.1 vulnerability STIX 2.1 with PoCs

Record summary

CVE-2021-47964 has a selected CVSS score of 8.7 (high); EIP currently links 1 catalogued exploit.

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.

Description source: CVE List

Exploitation context

Available material

Catalogued exploits
1

CISA SSVC decision

ExploitationPoC
AutomatableNo
Technical impactTotal

CISA Coordinator · SSVC 2.0.3 · Evaluated May 18, 2026 · Source: CVE List

Affected products and versions

1
ProductSourceVersion range

Schlix CMS

Browse Schlix / Schlix CMS
CVE List2.2.6-6affected

Proofs of concept

1

Catalogued exploits

ExploitDBSchlix CMS 2.2.6-6 - Remote Code Execution (Authenticated)ExploitDB exploitby Eren SaraçNot analyzed1 file
ExploitDB
PoC details

References

5