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Back to active CVEs
Medium · CVSS 5.1CVE-2026-18371

HTML injection in M-Files Web

Answer in brief

CVE-2026-18371 records a Medium severity (CVSS 5.1) vulnerability in HTML injection in M-Files Web. The current sources do not mark it as known exploited. The current feed maps M-Files Corporation/M-Files Web (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 19, 2026Updated Aug 31, 2026Source checked Oct 3, 2026First seen by HOL Aug 19, 2026Material review Aug 31, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps M-Files Corporation/M-Files Web (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
M-Files Corporation/M-Files Webgeneric>=0 <26.8.16330.226.8.16330.2

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for M-Files Corporation/M-Files Web.
  2. 2Review the reported fix. Update M-Files Corporation/M-Files Web to 26.8.16330.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 31, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 19, 2026

Sources and claim methodology

  • Source referenceempower.m-files.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WPMobile.App <= 11.84 - Unauthenticated Stored Cross-Site Scripting via '/android_json/search/<value>/0' Path SegmentAlso CWE-79
  • WPC Estimated Delivery Date for WooCommerce <= 4.0.1 - Reflected Cross-Site Scripting via 'rule_data' ParameterAlso CWE-79
  • OpenAM before 16.1.3 Reflected XSS via OAuth2 Authorization Error PageAlso CWE-79
  • OpenAM before 16.1.3 Latent XSS in SAML Load-Balancer Cookie Bounce PageAlso CWE-79
  • Responsive Plus <= 3.5.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode AttributesAlso CWE-79
  • Twenty20 Image Before-After <= 2.0.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'offset' Shortcode AttributeAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 3, 2026
References
1 linked source
Open source record