PT-2026-34597 · Ci4Ms · Ci4Ms

Fg0X0

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Published

2026-04-22

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Updated

2026-05-07

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CVE-2026-41202

CVSS v4.0

9.4

Critical

VectorAV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Name of the Vulnerable Software and Affected Versions CI4MS versions prior to 0.31.5.0
Description The restore() function in the Backup controller extracts user-uploaded ZIP archives without validating entry names. This allows an authenticated backend user with backup create permissions to perform a Zip Slip attack, writing files to arbitrary filesystem locations. An attacker can achieve remote code execution by dropping a PHP file into the public web root. The issue is located at the 'POST backend/backup/restore' endpoint, which uses the backup file parameter. Additionally, because this route is excluded from CSRF protection, a logged-in administrator could be forced to perform this action via a cross-site request.
Recommendations Update to version 0.31.5.0. As a temporary workaround, restrict access to the restore() function or the 'POST backend/backup/restore' endpoint to minimize the risk of exploitation.

Exploit

Fix

RCE

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-41202
GHSA-XP9F-PVVC-57P4

Affected Products

Ci4Ms