What’s Vulnerable › Vulnerabilities

CVE-2026-103437: ReadingLists imported metadata permits JavaScript URL XSS

• Severity: low (CVSS 1.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-30 · updated 2026-09-30
• Weakness: CWE-80

Description

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki ReadingLists extension allows Reflected XSS. This issue affects MediaWiki ReadingLists extension: 1.46 and 1.45.

Affected products

• The Wikimedia Foundation MediaWiki ReadingLists extension: 1.46, 1.45

References

• https://gerrit.wikimedia.org/r/q/I9a724c05b2a55845007512422362e02ed8cf44b0
• https://phabricator.wikimedia.org/T435863

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