CVE-2026-18371 PUBLISHED

HTML injection in M-Files Web

Assigner: M-Files Corporation
Reserved: 30.07.2026 Published: 19.08.2026 Updated: 19.08.2026

HTML injection vulnerability in M-Files Web before 26.8.16330.2 allows an authenticated attacker to affect web user interface contents displayed to other users.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
CVSS Score: 5.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	Low
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	M-Files Corporation
Product	M-Files Web
Versions	Default: unaffected affected from 0 to 26.8.16330.2 (excl.)

References

https://empower.m-files.com/security-advisories/CVE-2026-18371

Problem Types

CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') CWE

Impacts

CAPEC-148 Content Spoofing