CVE-2026-18372: CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') in M-Files Corporation M-Files Web
CVE-2026-18372 is a medium severity CSS injection vulnerability in M-Files Web that affects versions before 26.8.16330.2. It allows an authenticated vault administrator to inject arbitrary CSS, which can alter the web user interface for other vault users. This vulnerability requires authentication with high privileges and user interaction. No official patch or remediation details are currently provided by the vendor.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-18372) in M-Files Web involves improper neutralization of input during web page generation (CWE-79), specifically allowing CSS injection. An authenticated vault administrator can inject arbitrary CSS code, potentially affecting the appearance and behavior of the web interface as seen by other users. The CVSS 4.8 score reflects a medium impact with network attack vector, low complexity, and requiring privileges and user interaction. No known exploits are reported in the wild, and no vendor advisory or patch information is currently available.
Potential Impact
An attacker with authenticated vault administrator privileges can inject arbitrary CSS into the web interface, which may affect the visual presentation or user interface elements for other users. This could potentially be used to confuse users or facilitate further attacks, but the impact is limited by the requirement for high privileges and user interaction. There is no indication of direct code execution or data exfiltration from this vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict vault administrator privileges to trusted users only and monitor for suspicious activity related to interface manipulation.
CVE-2026-18372: CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') in M-Files Corporation M-Files Web
Description
CVE-2026-18372 is a medium severity CSS injection vulnerability in M-Files Web that affects versions before 26.8.16330.2. It allows an authenticated vault administrator to inject arbitrary CSS, which can alter the web user interface for other vault users. This vulnerability requires authentication with high privileges and user interaction. No official patch or remediation details are currently provided by the vendor.
CVSS v4.0
Score 4.8medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-18372) in M-Files Web involves improper neutralization of input during web page generation (CWE-79), specifically allowing CSS injection. An authenticated vault administrator can inject arbitrary CSS code, potentially affecting the appearance and behavior of the web interface as seen by other users. The CVSS 4.8 score reflects a medium impact with network attack vector, low complexity, and requiring privileges and user interaction. No known exploits are reported in the wild, and no vendor advisory or patch information is currently available.
Potential Impact
An attacker with authenticated vault administrator privileges can inject arbitrary CSS into the web interface, which may affect the visual presentation or user interface elements for other users. This could potentially be used to confuse users or facilitate further attacks, but the impact is limited by the requirement for high privileges and user interaction. There is no indication of direct code execution or data exfiltration from this vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict vault administrator privileges to trusted users only and monitor for suspicious activity related to interface manipulation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- M-Files Corporation
- Date Reserved
- 2026-07-30T10:05:36.954Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a859cabacd9273b4909e3ee
Added to database: 08/19/2026, 12:08:11 UTC
Last enriched: 08/19/2026, 12:27:34 UTC
Last updated: 08/19/2026, 12:40:43 UTC
Views: 5
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