CVE Intelligence

The Wikimedia Foundation MediaWiki vulnerabilities

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Published CVEs affecting The Wikimedia Foundation MediaWiki: 45 record(s), with affected versions and fixes.

CVE-2026-58037 Medium · 6.1 CWE-79 Jul 1, 2026
Core log entries for exceptions and XSS issues in log entry formatting code that may be caused by user-controlled input
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Language/Language.Php, includes/Logging/BlockLogFormatter.Php, includes/Logging/LogFormatter.Php, includes/Logging/PatrolLogFormatter.Php, includes/Logging/RenameuserLogFormatter.Php, includes/Logging/TagLogFormatter.Php, includes/Specials/SpecialVersion.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
CVE-2026-58036 High · 7.5 CWE-200 Jul 1, 2026
Users API leaks whether privileged users have their user groups disabled for lack of 2FA
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Api/ApiQueryAllUsers.Php, includes/Api/ApiQueryUsers.Php, includes/Permissions/PermissionManager.Php, includes/User/UserGroupManager.Php.
CVE-2026-58033 Medium · 6.5 CWE-200 Jul 1, 2026
"Total number of distinct authors" statistic at action=info does not exclude revisions where the author name was deleted
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Actions/InfoAction.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
CVE-2026-58032 Medium · 6.1 CWE-79 Jul 1, 2026
mw.Api.getErrorMessage() may return injected HTML if used without errorformat=html
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Api/index.Js. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
CVE-2026-58029 Medium · 6.5 CWE-287 Jul 1, 2026
Full Account Takeover from BotPasswords and OAuth via action=changeauthenticationdata
Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Api/ApiChangeAuthenticationData.Php, includes/Api/ApiLinkAccount.Php, includes/Api/ApiRemoveAuthenticationData.Php, includes/Specials/SpecialLinkAccounts.Php, includes/Specials/SpecialUnlinkAccounts.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
CVE-2026-58028 Medium · 5.4 CWE-79 Jul 1, 2026
Pretty-printed API output combined with centralauthtoken allows XSS with certain gadgets
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki, Wikimedia Foundation CentralAuth. This vulnerability is associated with program files includes/Api/ApiFormatBase.Php, includes/Api/ApiHelp.Php, includes/ResourceLoader/Module.Php, includes/Hooks/Handlers/PageDisplayHookHandler.Php, includes/LogFormatter/PermissionChangeLogFormatter.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9; CentralAuth: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
CVE-2026-58026 Medium · 5.7 CWE-200 Jul 1, 2026
$wgNonincludableNamespaces can be bypassed by embedding redirect in other namespaces
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Parser/Parser.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
CVE-2026-58025 Critical · 9.8 CWE-94 Jul 1, 2026
Remote Code Execution via Unsafe Deserialization in LogItem Import
Deserialization of untrusted data vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Import/WikiImporter.Php, includes/Import/WikiRevision.Php, includes/Logging/LogEntryBase.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
CVE-2026-58024 Medium · 5.7 CWE-200 Jul 1, 2026
API identification of users on private wikis
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Api/ApiUserrights.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
CVE-2026-58035 Medium · 4.8 CWE-79 Jul 1, 2026
Stored XSS through a system message in the codex version of Special:Block
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Special.Block/SpecialBlock.Vue.
CVE-2026-58031 Medium · 5.4 CWE-79 Jul 1, 2026
Stored i18n XSS in Special:ApiSandbox when a deprecated module is selected
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Special.Apisandbox/ApiSandboxLayout.Js. This issue affects MediaWiki: from 1.46.0-rc.0 before 1.46.0.
CVE-2026-34095 Medium · 6.1 CWE-668 May 11, 2026
action=raw with Special:Mypage subpage title responds with "Content-Type: text/html" on ctype=text/javascript request
Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Actions/ActionEntryPoint.Php, includes/Request/FauxResponse.Php. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
CVE-2026-34094 Low · 3.8 CWE-668 May 11, 2026
Customized help link for page protection indicator is relative to subpage name, because the link target is missing the "/wiki/" prefix
Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Page/Article.Php. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
CVE-2026-34093 Medium · 5.3 CWE-200 May 11, 2026
Special:UserRights allows viewing user rights from private wiki
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Specials/SpecialUserRights.Php. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
CVE-2026-34092 High · 7.5 CWE-200 May 11, 2026
Block UI elements in 'tools'-sidebar shows presence of an autoblocked IP
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Skin/Skin.Php. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
CVE-2026-34091 High · 7.5 CWE-200 May 11, 2026
User localization leaked by AbuseFilter + EventStream
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
CVE-2026-34088 High · 7.5 CWE-200 May 11, 2026
RecentChanges entries expose suppressed content via generated log page html
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
CVE-2025-67484 Critical · 9.8 CWE-20 Feb 2, 2026
MediaWiki ApiFormatXml improper input validation flaw
Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Api/ApiFormatXml.Php. This issue affects MediaWiki: from * before 1.39.16, 1.43.6, 1.44.3, 1.45.1.
CVE-2025-67483 Medium · 6.1 CWE-79 Feb 2, 2026
Theoretical i18n XSS in mediawiki.page.preview.js when a page has multiple protection levels
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Page.Preview.Js. This issue affects MediaWiki: from * before 1.43.6, 1.44.3, 1.45.1.
CVE-2025-67481 Medium · 6.1 CWE-79 Feb 2, 2026
mw.message(…).parse() doesn't output safe HTML, but it's being used as if it does
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.JqueryMsg/mediawiki.JqueryMsg.Js. This issue affects MediaWiki: from * before 1.39.16, 1.43.6, 1.44.3, 1.45.1.
CVE-2025-67480 Medium · 6.5 CWE-20 Feb 2, 2026
list=allrevisions can be used to bypass Extension:Lockdown
Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Api/ApiQueryRevisionsBase.Php. This issue affects MediaWiki: from * before 1.39.16, 1.43.6, 1.44.3, 1.45.1.
CVE-2025-67479 None · 0.0 Feb 2, 2026
Magic word replacement in legacy parser allows using reserved data attributes through wikitext
Vulnerability in Wikimedia Foundation MediaWiki, Wikimedia Foundation Cite. This vulnerability is associated with program files includes/Parser/CoreParserFunctions.Php, includes/Parser/Sanitizer.Php. This issue affects MediaWiki: from * before 1.39.14, 1.43.4, 1.44.1; Cite: from * before 1.39.14, 1.43.4, 1.44.1.
CVE-2025-67477 Medium · 6.1 CWE-79 Feb 2, 2026
Stored XSS through a system message in Special:ApiSandbox
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Special.Apisandbox/ApiSandboxLayout.Js. This issue affects MediaWiki: from * before 1.44.3, 1.45.1.
CVE-2025-67476 Medium · 4.3 Feb 2, 2026
Importing leaks IP address of importer via EventStreams
Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Import/ImportableOldRevisionImporter.Php. This issue affects MediaWiki: from * before 1.44.3, 1.45.1.
CVE-2025-67475 Medium · 6.1 CWE-79 Feb 2, 2026
Stored XSS through edit summaries in MW Core
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/CommentFormatter/CommentParser.Php. This issue affects MediaWiki: from * before 1.39.16, 1.43.6, 1.44.3, 1.45.1.