Bug 2405155 (CVE-2025-62693)

Summary: CVE-2025-62693 mediawiki-lastmodified: Stored XSS through system messages in LastModified
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the LastModified extension in Mediawiki. The lastmodified-seconds, lastmodified-minutes, lastmodified-hours, lastmodified-days, lastmodified-months and lastmodified-years system messages are inserted into raw HTML without proper escaping, allowing an attacker to inject malicious HTML into these messages and causing a stored cross-site scripting (XSS) vulnerability.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2025-10-20 18:02:22 UTC
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - LastModified Extension allows Stored XSS.This issue affects Mediawiki - LastModified Extension: from master before 1.39.