$ cve CVE-2023-33177 JSON

CVE-2023-33177 EXPLOIT

8.8

HIGH · CVSS 3.1 · EPSS 7% (pctl 94)

Patch early

A public exploit exists.

Description

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.

Scoring

CVSS	8.8 (HIGH, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS	7.04% — more likely to be exploited than 94% of all CVEs
Weakness	CWE-22
On CISA KEV	no
Public exploit	yes
Published	2023-05-30
Last modified	2026-06-17

Affected (1)

Vendor	Product
xibosignage	xibo

Public exploits

Source	Title	Date
exploit-db	xibocms 3.3.4 - RCE	2026-04-08

References

→ the Explorer · watch your stack · NVD