CVE Catalog

CVE-2026-103439

LowCVSS 0.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.15%

3th percentile - higher than 3% of all known CVEs

Summary

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Wikbase extension allows Cross-Site Scripting (XSS). This issue affects MediaWiki Wikbase extension: 1.46, 1.45, and 1.43.

Risk Assessment

XSS may allow an attacker to execute arbitrary JavaScript in a victim's browser, potentially leading to session or data theft. The risk is particularly relevant for users with content editing privileges.

Recommendation

Update the Wikbase extension to a version containing the fix or disable it until the update is applied. Additionally, consider implementing input filtering mechanisms.

Related vulnerabilities

Original NVD description (English source)

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Wikbase extension allows Cross-Site Scripting (XSS). This issue affects MediaWiki Wikbase extension: 1.46, 1.45, and 1.43.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS