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Vulnerability IntelligenceCVE-2026-39935

CVE-2026-39935

MEDIUM6.9

XSS-via-i18n in localised wiki names

Published Apr 7, 2026

Modified 1 weeks ago

Details

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 was remediated only on the master branch.

References

https://gerrit.wikimedia.org/r/c/1249320

https://phabricator.wikimedia.org/T418254

https://www.cve.org/CVERecord?id=CVE-2026-39935

CVSS Analysis

CVSS v4.0

6.9

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Attack Requirements

NoneAT:N

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Vulnerable System

Vuln. Confidentiality

LowVC:L

Vuln. Integrity

LowVI:L

Vuln. Availability

LowVA:L

Subsequent System

Subseq. Confidentiality

LowSC:L

Subseq. Integrity

LowSI:L

Subseq. Availability

LowSA:L

6.9/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

Weakness Type (CWE)

Injection

Cross-site Scripting (XSS)

Ecosystems

Timeline

PublishedApr 7, 2026

ModifiedApr 8, 2026

CVE-2026-39935 | Mondoo Vulnerability Intelligence