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  4. CVE 2026 103046 wikifunctionsfragmentrenderer does unsafe string
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Back to active CVEs
Medium · CVSS 6.1CVE-2026-103046

WikifunctionsFragmentRenderer does unsafe string replacements on user-provided HTMLCVE-2026-103046

Answer in brief

CVE-2026-103046 records a Medium severity (CVSS 6.1) vulnerability in WikifunctionsFragmentRenderer does unsafe string replacements on user-provided HTML. The current sources do not mark it as known exploited. The current feed maps The Wikimedia Foundation/Mediawiki - WikiLambda Extension (generic), Wikimedia Foundation/MediaWiki - WikiLambda extension (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 Sep 29, 2026Updated Sep 30, 2026Source checked Nov 14, 2026First seen by HOL Sep 29, 2026Material review Sep 30, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.1
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 6.1. 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 The Wikimedia Foundation/Mediawiki - WikiLambda Extension (generic), Wikimedia Foundation/MediaWiki - WikiLambda extension (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
The Wikimedia Foundation/Mediawiki - WikiLambda Extensiongeneric>=0 <1.46.11.46.1
Wikimedia Foundation/MediaWiki - WikiLambda extensiongeneric>=0 <1.46.11.46.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for The Wikimedia Foundation/Mediawiki - WikiLambda Extension, Wikimedia Foundation/MediaWiki - WikiLambda extension.
  2. 2Review the reported fix. Update The Wikimedia Foundation/Mediawiki - WikiLambda Extension to 1.46.1; Wikimedia Foundation/MediaWiki - WikiLambda extension to 1.46.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 29, 2026

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

  2. Source modified

    Sep 30, 2026

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

  3. First seen by HOL

    Sep 29, 2026

Sources and claim methodology

  • Source referencegerrit.wikimedia.org
  • Source referencephabricator.wikimedia.org
Upstream source description

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - WikiLambda extension allows Stored XSS. This issue affects MediaWiki - WikiLambda extension: before 1.46.1.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • IBM ContextForge MCP Gateway is affected by a DOM-based cross-site scriptingAlso CWE-79
  • Countdown, Coming Soon, Maintenance – Countdown & Clock <= 3.0.8 - Author+ Stored XSS via savePostAlso CWE-79
  • Checkout Files Upload for WooCommerce 2.4.0 - Unauthenticated Stored XSS via Uploaded FileAlso CWE-79
  • Lightbox with PhotoSwipe < 5.19.0 - Unauthenticated Stored XSS via Comment Link TitleAlso CWE-79
  • Flatsome <= 3.20.12 - Authenticated (Contributor+) DOM-Based Stored Cross-Site Scripting via 'data-text-sec', 'data-title', and 'title' Attributes via Custom HTML BlockAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Nov 14, 2026
References
2 linked sources
Open source record