CVE-2026-18372

4.8 MEDIUM 0.4% exploit odds No fix listed XSS

What it is

CSS injection vulnerability in M-Files Web before 26.8.16330.2 allows an authenticated vault administrator to inject arbitrary CSS, affecting the web user interface displayed to other vault users.

At a glance

Exploitability: Can be exploited over the network with an admin-level account, but needs a user to act. Limited direct impact.
Exploit odds: 0.4% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-08-19 12:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-10-22 08:09 UTC Last updatedMost recent change to the record

Details

Published: 2026-08-19 12:17 UTC
Last modified: 2026-10-22 08:09 UTC
Exploit probability: 0.4% · EPSS, next 30 days
Weakness: CWE-79 · Cross-site scripting
Record status: Deferred

Attack profile CVSS 4.0 · 4.8

Attack vector: Network
Complexity: Low
Attack requirements: None
Privileges needed: High
User interaction: Passive
Confidentiality: None
Integrity: Low
Availability: None

Raw vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/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

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References

https://empower.m-files.com/security-advisories/CVE-2026-18372

NVD record · CVE.org record