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CVE-2026-39936

Stored XSS in Score due to usage of non-reserved data attributes

Published: Apr 7, 2026Updated: Jul 21, 2026 Sources: CVE List NVDCWE-79

Description

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - Score Extension allows Cross-Site Scripting (XSS). The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.

No summary for this CVE yet.

Weaknesses

Affected Products

The Wikimedia Foundation
oss-projectaka mediawiki - centralauth extension, mediawiki - cargo

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
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References

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