CVE-2026-39935 - Vulnerability Details - OpenCVE

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - CampaignEvents Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - CampaignEvents Extension: 1.43.7, 1.44.4, 1.45.2.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact Low

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

No data.

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://gerrit.wikimedia.org/r/c/1249320
https://phabricator.wikimedia.org/T418254

History

Tue, 07 Apr 2026 22:30:00 +0000

Type	Values Removed	Values Added
Description		Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - CampaignEvents Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - CampaignEvents Extension: 1.43.7, 1.44.4, 1.45.2.
Title		XSS-via-i18n in localised wiki names
Weaknesses		CWE-79
References		https://gerrit.wikimedia.org/r/c/1249320 https://phabricator.wikimedia.org/T418254
Metrics		cvssV4_0 `{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published: 2026-04-07T22:04:02.098Z

Updated: 2026-04-07T22:04:02.098Z

Reserved: 2026-04-07T21:25:36.589Z

Link: CVE-2026-39935

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-04-07T23:16:27.380

Modified: 2026-04-07T23:16:27.380

Link: CVE-2026-39935

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-79

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