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2913 articles · 109766 vulns · 38/41 feeds (7d)
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CVE-2026-39840EXPLOITEDPATCHED
wikimedia foundation · cargo

CSS injection in multiple Cargo display formats

Description

A vulnerability classified as problematic was found in Wikimedia Cargo Extension up to 3.8.6 on Mediawiki. The manipulation results in cross site scripting. This vulnerability is known as CVE-2026-39840.

Affected Products

VendorProductVersions
wikimedia foundationcargo0

Also Affects

Downstream vendors/products affected by this vulnerability

VendorProductSourceConfidence
open sourcemediawikicert_advisory90%

References

  • https://phabricator.wikimedia.org/T416368
  • https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237966

Related News (2 articles)

Tier B
BSI Advisories6h ago
[NEU] [hoch] MediaWiki Erweiterungen: Mehrere Schwachstellen ermöglichen Cross-Site Scripting
→ No new info (linked only)
Tier C
VulDB2d ago
CVE-2026-39840 | Wikimedia Cargo Extension up to 3.8.6 on Mediawiki cross site scripting (EUVD-2026-19929)
→ No new info (linked only)
CISA KEV❌ No
Actively exploited✅ Yes
Patch available
3.8.7
CWECWE-79
PublishedApr 7, 2026
Last enriched2d agov2
Trending Score64
Source articles2
Independent2
Info Completeness8/14
Missing: cvss, epss, kev, exploit, iocs, mitre_attack

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Related CVEs (5)

NONECVE-2026-39934EXP
Growth Experiments ReassignMenteesJob runs as an infinite loop
Trending: 59
NONECVE-2026-5762EXP
ReportIncident DiscussionTools integration causes slow requests
Trending: 58
HIGHCVE-2026-39839
Stored XSS through URLs in Cargo's map format
Trending: 45
HIGHCVE-2026-39837
Stored XSS through the dynamic table format in Cargo
Trending: 45
HIGHCVE-2026-39841
Stored XSS through list fields on Cargo's page values and Special:CargoTables
Trending: 45

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
Apr 7, 2026
Discovered by ZDM
Apr 7, 2026
Actively Exploited
Apr 7, 2026
Patch Available
Apr 7, 2026
Updated: description, severity, activelyExploited
Apr 7, 2026

Version History

v2
Last enriched 2d ago
v2Tier C2d ago

Updated description with new details, changed severity to HIGH, and noted that the exploit is not available but the vulnerability is actively exploited.

descriptionseverityactivelyExploited
via VulDB
v12d ago

Initial creation