Medium severity6.1NVD Advisory· Published Apr 7, 2026· Updated Apr 15, 2026

CVE-2026-39839

Description

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in Wikimedia Foundation Mediawiki - Cargo Extension allows Stored XSS.This issue affects Mediawiki - Cargo Extension: before 3.8.7.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

MediaWiki/Cargo
cpe:2.3:a:mediawiki:cargo:*:*:*:*:*:*:*:*
Range: <3.8.7
Wikimedia Foundation/Mediawiki CSS Extensionllm-fuzzy
Range: <3.8.7

Patches

Vulnerability mechanics

References

gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237957nvdPatch
gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237977nvdPatch
phabricator.wikimedia.org/T416271nvdExploitIssue TrackingVendor Advisory

News mentions

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cvss	0.397
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000