HTML injection in M-Files Web
Priority LOW 23CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00396 34th percentileScored 2026-11-07
Fix Fixed M-Files Web (M-Files Corporation): 26.8.16330.2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| M-Files Corporation | M-Files Web | before 26.8.16330.2 | 26.8.16330.2 | Patch available | CNA |
- M-Files Web VendorM-Files Corporation Affected before 26.8.16330.2 Fixed in 26.8.16330.2 Patch available CNA
Remediation
- Fix · CNA M-Files Web (M-Files Corporation) Fixed in 26.8.16330.2
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
M-Files Web 26.8.16330.2
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-15107 CSS injection in M-Files WebPriority LOW 22
Timeline
- 2026-10-02 Threatist record created from CVE-2026-18371
- 2026-10-03 Alias added: GHSA-h853-8cgc-4pxc
References
More M-Files Corporation vulnerabilities
- TI-2021-15287 M-Files Web before 20.10.9524.1 allows a denial of service via overlapping ranges (in… CVSS 3.1HIGH 7.5
- TI-2025-05387 Path traversal in M-Files API CVSS 4.0HIGH 8.4
- TI-2024-09388 Support for authentication bypass condition in M-Files LDAP authentication CVSS 4.0CRITICAL 9.2
- TI-2023-06317 Brute force vulnerability in M-Files user authentication CVSS 3.1CRITICAL 9.8
- TI-2021-18438 Missing brute-force protection in M-Files Server CVSS 3.1CRITICAL 9.8
- TI-2025-11909 Session Token Disclosure in M-Files Web CVSS 4.0HIGH 8.6
Sources
- CVE-2026-18371 · CVE Program
- CVE-2026-18371 · NVD
- FIRST EPSS
- GHSA-h853-8cgc-4pxc · GitHub Advisory Database · CC BY 4.0
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