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Mediawiki - Cargo ExtensionCargo Extension: SQLi in Special:Drilldown

Risk 86
Severity
6.9
SQL Injection
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Improper neutralization of special elements used in an SQL command ('SQL injection') vulnerability in The Wikimedia Foundation Mediawiki - Cargo Extension allows SQL Injection.

This issue affects Mediawiki - Cargo Extension: from before 1.43.9,1.44.6,1.45.4.

First published (updated )
CVE-2026-14363

Wikimedia Foundation Mediawiki - Charts ExtensionStored XSS in Wikimedia Chart pie tooltip via Data:*.tab field title

Risk 50
Severity
6.9
XSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - Charts Extension allows Cross-Site Scripting (XSS).

This issue affects Mediawiki - Charts Extension: from before 1.43.9,1.44.6,1.45.4.

First published (updated )
CVE-2026-14358

Wikimedia Foundation MediaWiki - WikiLambda ExtensionBlocked users can create and edit WikiLambda objects

Risk 50
Severity
6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Authentication Bypass.

This issue affects Mediawiki - WikiLambda Extension: from before 1.43.9,1.44.6,1.45.4.

First published (updated )
CVE-2026-58517

Mediawiki - Cargo ExtensionSQLi in Cargo extension via year range filter

Risk 86
Severity
6.9
SQL Injection
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Improper neutralization of special elements used in an SQL command ('SQL injection') vulnerability in The Wikimedia Foundation Mediawiki - Cargo Extension allows SQL Injection.

This issue affects Mediawiki - Cargo Extension: from before 1.43.9,1.44.6,1.45.4.

First published (updated )
CVE-2026-58521

The Wikimedia Foundation Mediawiki - UrlShortener ExtensionUrlShortener defaults to ineffective validation open to third-party redirects

Risk 50
Severity
6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

URL redirection to untrusted site ('open redirect') vulnerability in The Wikimedia Foundation Mediawiki - UrlShortener Extension allows Cross-Site Flashing.

This issue affects Mediawiki - UrlShortener Extension: from before 1.43.9, 1.44.6, 1.45.4.

First published (updated )
CVE-2026-58520

Wikimedia Foundation MediaWikiRemote Code Execution via Unsafe Deserialization in LogItem Import

Risk 86
Severity
5.9
Code Injection
CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-58025

Wikimedia Foundation MediaWikiFull Account Takeover from BotPasswords and OAuth via action=changeauthenticationdata

Risk 40
Severity
5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-58029

Wikimedia Foundation MediaWikiPretty-printed API output combined with centralauthtoken allows XSS with certain gadgets

Risk 34
Severity
XSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-58028

Wikimedia Foundation MediaWiki$wgNonincludableNamespaces can be bypassed by embedding redirect in other namespaces

Risk 33
Severity
Infoleak
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-58026

Wikimedia Foundation timelineFull RCE using EasyTimeline Extension

Risk 57
Severity
EPSS
1.47%
Code Injection
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

A vulnerability in Wikimedia Foundation timeline.

This vulnerability is associated with program files scripts/EasyTimeline.Pl, includes/Timeline.Php.

This issue affects timeline: from before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

First published (updated )
CVE-2026-8857

Wikimedia Foundation timelineStored XSS through javascript URLs in SVGs generated by EasyTimeline

Risk 38
Severity
XSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation timeline.

This vulnerability is associated with program files includes/Timeline.Php, scripts/EasyTimeline.Pl.

This issue affects timeline: from before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

First published (updated )
CVE-2026-58038

Wikimedia Foundation AbuseFilterQueryAbuseFilter API can be used to see the hit count of private filters, which is hidden in the UI

Risk 38
Severity
5.3
Infoleak
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation AbuseFilter.

This vulnerability is associated with program files includes/Api/QueryAbuseFilters.Php.

This issue affects AbuseFilter: from before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

First published (updated )
CVE-2026-58027

Wikimedia Foundation SyntaxHighlight_GeSHiSyntaxHighlight stored XSS via unsanitized 'linelinks' attribute

Risk 38
Severity
5.3
XSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation SyntaxHighlightGeSHi.

This vulnerability is associated with program files includes/SyntaxHighlight.Php.

This issue affects SyntaxHighlightGeSHi: from before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

First published (updated )
CVE-2026-58030

Wikimedia Foundation MediaWikimw.Api.getErrorMessage() may return injected HTML if used without errorformat=html

Risk 38
Severity
5.3
XSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-58032

Wikimedia Foundation MediaWiki"Total number of distinct authors" statistic at action=info does not exclude revisions where the author name was deleted

Risk 37
Severity
5.3
Infoleak
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-58033

Wikimedia Foundation MediaWikiCore log entries for exceptions and XSS issues in log entry formatting code that may be caused by user-controlled input

Risk 38
Severity
XSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-58037

Wikimedia Foundation MediaWikiUsers API leaks whether privileged users have their user groups disabled for lack of 2FA

Risk 43
Severity
2.1
Infoleak
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-58036

Wikimedia Foundation MediaWikiAPI identification of users on private wikis

Risk 33
Severity
5.1
Infoleak
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-58024

src/Backend/MWOAuthServer.PhpSession fixation attacks on improperly configured OAuth 1.0a tools

Risk 62
Severity
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Session fixation vulnerability in Wikimedia Foundation OAuth.

This vulnerability is associated with program files src/Backend/MWOAuthServer.Php.

This issue affects OAuth: from through 1.46.0, 1.45.4, 1.44.6, 1.43.9.

First published (updated )
CVE-2026-13707

Wikimedia Foundation UrlShortener extensionUrlShortener extension url validation can be bypassed due to difference between php url parsing and WHATWG

Risk 79
Severity
Input Validation
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Improper input validation vulnerability in Wikimedia Foundation UrlShortener.

This vulnerability is associated with program files includes/UrlShortenerUtils.Php.

First published (updated )
CVE-2026-13706

Wikimedia Foundation MediaWikiStored i18n XSS in Special:ApiSandbox when a deprecated module is selected

Risk 34
Severity
XSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-58031

Wikimedia Foundation CheckUserStored XSS through a system message when blocking a temporary account that's related to other temporary accounts

Risk 29
Severity
XSS
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser.

This vulnerability is associated with program files modules/ext.CheckUser.TempAccounts/components/blockConnectedTempAccountsField.Vue.

This issue affects CheckUser: from 1.46.0-rc.0 before 1.46.0.

First published (updated )
CVE-2026-58034

Wikimedia Foundation MediaWikiStored XSS through a system message in the codex version of Special:Block

Risk 29
Severity
XSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-58035

Mediawiki - RedirectManager ExtensionCSRF

Risk 50
Severity
6.9
CSRF
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Cross-Site request forgery (CSRF) vulnerability in The Wikimedia Foundation Mediawiki - RedirectManager Extension allows Cross Site Request Forgery.

This issue affects Mediawiki - RedirectManager Extension: from before 1.3.3.

First published (updated )
CVE-2026-58518

Wikimedia Foundation MediaWikiaction=raw with Special:Mypage subpage title responds with "Content-Type: text/html" on ctype=text/javascript request

Risk 38
Severity
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-34095

Wikimedia Foundation MediaWikiCustomized help link for page protection indicator is relative to subpage name, because the link target is missing the "/wiki/" prefix

Risk 26
Severity
2
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-34094

Wikimedia Foundation MediaWikiSpecial:UserRights allows viewing user rights from private wiki

Risk 27
Severity
1.1
Infoleak
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:A/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-34093

Wikimedia Foundation MediaWikiBlock UI elements in 'tools'-sidebar shows presence of an autoblocked IP

Risk 43
Severity
2.1
Infoleak
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki.

1 / 4
Source: Launchpad
First published (updated )
CVE-2026-34092

Wikimedia Foundation MediaWikiUser localization leaked by AbuseFilter + EventStream

Risk 43
Severity
5.5
Infoleak
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:U/V:X/RE:X/U:X

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.

First published (updated )
CVE-2026-34091

Wikimedia Foundation MediaWikiRecentChanges entries expose suppressed content via generated log page html

Risk 43
Severity
1.3
Infoleak
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:U/V:X/RE:M/U:X

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki.

1 / 4
Source: Launchpad
First published (updated )
CVE-2026-34088

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