What’s Vulnerable › Vulnerabilities

CVE-2026-0671: Multiple stored i18n/message-key XSSes in UploadWizard

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-08 · updated 2026-10-26
• Weakness: CWE-79

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki - UploadWizard extension allows Cross-Site Scripting (XSS).This issue affects MediaWiki - UploadWizard extension: 1.45, 1.44, 1.43, 1.39.

Affected products

• Wikimedia Foundation Mediawiki - UploadWizard Extension: 1.39, 1.43, 1.44, 1.45

References

• https://gerrit.wikimedia.org/r/q/I16de2211594ea9a686868ad7789f9879bf981fa1
• https://phabricator.wikimedia.org/T407157

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