CVE-2023-33177
Xibo CMS vulnerable to Remote Code Execution through Zip Slip
- Published
- May 30, 2023
- Updated
- Jun 17, 2025
- Assigning CNA
- GitHub_M
- Evidence observed
- Apr 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 94.0%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
Xibo is a content management system (CMS). A path traversal vulnerability exists in the Xibo CMS whereby a specially crafted zip file can be uploaded to the CMS via the layout import function by an authenticated user which would allow creation of files outside of the CMS library directory as the webserver user. This can be used to upload a PHP webshell inside the web root directory and achieve remote code execution as the webserver user. Users should upgrade to version 2.3.17 or 3.3.5, which fix this issue. Customers who host their CMS with Xibo Signage have already received an upgrade or patch to resolve this issue regardless of the CMS version that they are running.
Sources
3This exploit demonstrates a **path traversal vulnerability** in Xibo CMS (CVE-2023-33177) that allows remote code execution through malicious layout imports.
- -CVE-2023-33177-Exploit
Xibo CMS CVE-2023-33177 Vulnerability Tester
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