Wikimedia Echo information leakage vulnerability

Wikimedia Echo is a messaging extension provided by the Wikimedia Foundation that offers features for sending notifications within the site and reminding users. Wikimedia Echo has a vulnerability related to information leakage, which stems from the exposure of sensitive information in the program...

CVE-2026-34090: Exposure of Sensitive Information to an Unauthorized Actor

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation CheckUser. This issue affects CheckUser: from 1.45.0 before 1.45.2...

MediaWiki: CVE-2026-34087: Exposure of Sensitive Information to an Unauthorized Actor

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation OATHAuth. This issue affects OATHAuth: from before 1.43.7, 1.44.4, 1.45.2...

CVE-2026-34086: Improper Input Validation

Vulnerability in Wikimedia Foundation AbuseFilter. This issue affects AbuseFilter: from before 1.43.7, 1.44.4, 1.45.2...

CVE-2026-5266: Exposure of Sensitive Information to an Unauthorized Actor

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Echo. This vulnerability is associated with program files includes/Api/ApiEchoNotifications.Php. This issue affects Echo: from before 1.43.7, 1.44.4, 1.45.2...

Wikimedia CheckUser information leakage vulnerability

Wikimedia CheckUser is a advanced investigation tool of the Wikimedia Foundation designed to combat disruptive behavior. Versions of Wikimedia CheckUser from 1.45.0 to 1.45.2 contained a vulnerability related to information leakage, which resulted in sensitive information being exposed to...

EUVD-2026-19980

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 affects Mediawiki - CampaignEvents Extension: 1.43.7, 1.44.4, 1.45.2...

CVE-2026-39937

Improper removal of sensitive information before storage or transfer vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth Extension allows Resource Leak Exposure. The issue has been remediated on the master branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1....

CVE-2026-39933

Improper neutralization of input during web page generation 'cross-site scripting' vulnerability in The Wikimedia Foundation Mediawiki - GlobalWatchlist Extension allows Cross-Site Scripting XSS. The issue has been remediated on the master branch, and in the release branches for MediaWiki version...

CVE-2026-39936

Improper neutralization of input during web page generation 'cross-site scripting' vulnerability in The Wikimedia Foundation Mediawiki - Score Extension allows Cross-Site Scripting XSS. The issue has been remediated on the "master" branch, and in the release branches for MediaWiki versions 1.43,...

CVE-2026-39933 Multiple XSS vulnerabilities in GlobalWatchlist

Improper neutralization of input during web page generation 'cross-site scripting' vulnerability in The Wikimedia Foundation Mediawiki - GlobalWatchlist Extension allows Cross-Site Scripting XSS. The issue has been remediated on the master branch, and in the release branches for MediaWiki version...

CVE-2026-39933

Improper neutralization of input during web page generation 'cross-site scripting' vulnerability in The Wikimedia Foundation Mediawiki - GlobalWatchlist Extension allows Cross-Site Scripting XSS. The issue has been remediated on the "master" branch, and in the release branches for MediaWiki...

EUVD-2026-19889

Improper neutralization of input during web page generation 'cross-site scripting' vulnerability in Wikimedia Foundation MediaWiki - ProofreadPage Extension allows XSS Targeting Non-Script Elements.This issue affects...

EUVD-2026-19851

Improper neutralization of alternate XSS syntax vulnerability in The Wikimedia Foundation Mediawiki - Wikilove Extension allows Cross-Site Scripting XSS.This issue affects Mediawiki - Wikilove Extension: 1.43.7, 1.44.4, 1.45.2...

CVE-2026-39839

Improper neutralization of Script-Related HTML tags in a web page basic XSS vulnerability in Wikimedia Foundation Mediawiki - Cargo Extension allows Stored XSS.This issue affects Mediawiki - Cargo Extension: before 3.8.7...

CVE-2026-5762

CVE-2026-5762 affects the Wikimedia Foundation MediaWiki ReportIncident Extension versions 1.43.7, 1.44.4, and 1.45.2. The root cause is allocation of resources without limits or throttling, enabling HTTP DoS and causing potential resource exhaustion (impact on availability). The document provide...

CVE-2026-22711

Improper neutralization of alternate XSS syntax vulnerability in The Wikimedia Foundation Mediawiki - Wikilove Extension allows Cross-Site Scripting XSS.The issue has been remediated on the "master" branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45...

PT-2026-30974

Improper neutralization of alternate XSS syntax vulnerability in The Wikimedia Foundation Mediawiki - Wikilove Extension allows Cross-Site Scripting XSS.This issue affects Mediawiki - Wikilove Extension: 1.43.7, 1.44.4, 1.45.2...

CVE-2026-39936: Improper Neutralization of Input During Web Page Generation

Improper neutralization of input during web page generation 'cross-site scripting' vulnerability in The Wikimedia Foundation Mediawiki - Score Extension allows Cross-Site Scripting XSS. The issue has been remediated on the master branch, and in the release branches for MediaWiki versions 1.43,...

CVE-2026-39935: Improper Neutralization of Input During Web Page Generation

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...