MediaWiki-announce July 2026

mediawiki-announce@lists.wikimedia.org

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MediaWiki Extensions and Skins Security Release Supplement (1.43.9/1.44.6/1.45.4)
by Scott Bassett 02 Jul '26

02 Jul '26

Greetings- With the security/maintenance release of MediaWiki 1.43.9/1.44.6/1.45.4, we would also like to provide this supplementary announcement of MediaWiki extensions and skins with now-public Phabricator tasks, security patches and backports [1]: UrlShortener + (T418533, CVE-2026-13706) - UrlShortener extension url validation can be bypassed due to difference between php url parsing and WHATWG https://gerrit.wikimedia.org/r/q/I64268dda19ea9dfa048b3e2212a682d53c2a59d6 RedirectManager + (T423826, CVE-2026-58518) - RedirectManager's API does not require a CSRF token https://gerrit.wikimedia.org/r/1275494 Cargo + (T424140, CVE-2026-58519) - Stored XSS through Cargo's map format https://gerrit.wikimedia.org/r/c/1277612 UrlShortener + (T418431, CVE-2026-58520) - UrlShortener defaults to ineffective validation open to third-party redirects https://gerrit.wikimedia.org/r/1306769 CentralAuth + (T422306, CVE-2026-58028) - Pretty-printed API output combined with centralauthtoken allows XSS with certain gadgets https://gerrit.wikimedia.org/r/q/Idb42ab1cf685ef145b78701784909c590d758917 StructuredDiscussions + (T424285) - Flow ships Handlebars 3.0.0 with known security vulnerabilities. See https://security.snyk.io/package/npm/handlebars/3.0.0 for more details https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Flow/+/1277782 Timeline + (T426631, CVE-2026-8857) - Full RCE using EasyTimeline Extension https://gerrit.wikimedia.org/r/q/Ic2f3aa24922e6d44d063b76630cc888016ba4c74 https://gerrit.wikimedia.org/r/q/Ia19cbe8c80fa5a765abca68305254c15e817bfac Timeline + (T427611, CVE-2026-58038) - Stored XSS through javascript URLs in SVGs generated by EasyTimeline https://gerrit.wikimedia.org/r/q/Ia61203fcd4913ce97fd6c05ea908d3910c213ff6 Maps + (GHSA-4h7g-5542-v3fc, CVE-2026-52854) - Stored XSS through the overlays parameter in the display_map parser function https://github.com/ProfessionalWiki/Maps/security/advisories/GHSA-4h7g-5542… https://github.com/ProfessionalWiki/Maps/commit/737a993fc2f40499e9bb22198fd… Cargo + (T428274, CVE-2026-58521) - SQLi in Cargo extension via year range filter https://gerrit.wikimedia.org/r/1298854 OAuth +(T428324, CVE-2026-13707) - Session fixation attacks on improperly configured OAuth 1.0a tools https://gerrit.wikimedia.org/r/q/Ife0b4bf16761c01bdb0e91a29f1fb94de380c73e EmbedVideo (fork) +(GHSA-c29q-5xm7-5p62, CVE-2026-55690) - Stored XSS via unsanitized service name in exception text https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/security… https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/commit/9… EmbedVideo (fork) +(GHSA-v65j-hff3-753c, CVE-2026-57440) - Stored XSS via malformed src url with $wgEmbedVideoRequireConsent disabled https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/security… https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/commit/3… EmbedVideo (fork) +(GHSA-5c7p-g73q-rpg5, CVE-2026-55692) - Stored XSS via malformed src url with $wgEmbedVideoRequireConsent enabled https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/security… https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/commit/3… EmbedVideo (fork) +(GHSA-7h5p-637f-jfr7, CVE-2026-55691) - Stored XSS via unsanitized class passed to template https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/security… https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/commit/3… WikiLambda +(T428833, CVE-2026-58517) - Blocked users can create and edit WikiLambda objects https://gerrit.wikimedia.org/r/1305376 Charts +(T430548, CVE-2026-14358) - Stored XSS in Wikimedia Chart pie tooltip via Data:*.tab field title https://gerrit.wikimedia.org/r/q/Ibdaa7c852ae83f562e84dddc9c96ad64e2152210 Cargo +(T422774, CVE-2026-14363) - Cargo Extension: SQLi in Special:Drilldown https://gerrit.wikimedia.org/r/c/1269701 https://gerrit.wikimedia.org/r/c/1279498 The Wikimedia Security Team recommends updating these extensions and/or skins to the current master branch or relevant, supported release branch [2] as soon as possible. Some of the referenced Phabricator tasks above _may_ still be private. Unfortunately, when security issues are reported, sometimes sensitive information is exposed and since Phabricator is historical, we cannot make these tasks public without exposing this sensitive information. If you have any additional questions or concerns regarding this update, please feel free to contact security(a)wikimedia.org or file a security task within Phabricator [3]. CVE JSON references can be found on Gitlab [4]. [1] https://phabricator.wikimedia.org/T421273 [2] https://www.mediawiki.org/wiki/Version_lifecycle [3] https://www.mediawiki.org/wiki/Reporting_security_bugs [4] https://gitlab.wikimedia.org/repos/security/wikimedia-cve-assignments -- Scott Bassett sbassett(a)wikimedia.org

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Announcing MediaWiki 1.46.0
by Mateus Santos 01 Jul '26

01 Jul '26

I am happy to announce the availability of the general release of MediaWiki 1.46! Tarballs have already been uploaded, and the git tag has been pushed. Thanks to everyone who helped out with this release, especially thanks to those who tested out the release candidate and provided feedback, as well as the developers who worked on fixes for the 1.46 final release. To see what's changed in 1.46, see the release notes file.[0] If you encounter any issues, please file a task.[1] You can see open tasks for the branch on Phabricator.[2] MediaWiki 1.46 is due to be supported until the end of July 2026. It's important to note that 1.46.0 is shipped with the changes released on the current security and maintenance release. === Changes since MediaWiki 1.46.0-rc.0 === * (T422244, CVE-2026-58025) SECURITY: Safely unserialize log entry parameters [CVE-2026-58025] * (T422995, CVE-2026-58037) SECURITY: LogFormatter: 'raw' parameter format is no longer raw HTML [CVE-2026-58037] * (T422676, CVE-2026-58029) SECURITY: Check for editmyprivateinfo right in more places [CVE-2026-58029] * (T422085, CVE-2026-58024) SECURITY: Restrict interwiki user lookup in ApiUserrights [CVE-2026-58024] * (T299359, CVE-2026-58026) SECURITY: Make sure the actual title that's being transcluded is includable [CVE-2026-58026] * (T426867, CVE-2026-58032) SECURITY: mw.Api.getErrorMessage: Treat formatversion=1 as text [CVE-2026-58032] * (T427235, CVE-2026-58033) SECURITY: Exclude rev-deleted usernames from distinct authors query [CVE-2026-58033] * (T422306, CVE-2026-58028) SECURITY: Disallow user JS in pretty-print api.php responses [CVE-2026-58028] * (T425406, CVE-2026-58036) SECURITY: Fix ApiQueryUsers leaking status of private user conditions for user [CVE-2026-58036] * (T428809, CVE-2026-58035) SECURITY: Parse message using v-i18n-html instead of using v-html * (T423617) Check the target url for redirects are allowed * (T383047) Mail: Log PHP mail() send failures with recipient count * (T429720) FileRepo: Fix typos in schema compatibility checks * (T383047) Mail: Extract sendWithMailFunction() from UserMailer::send() * (T429965) Updated guzzlehttp/guzzle from 7.12.1 to 7.12.3 * (T429826) Updated guzzlehttp/guzzle from 7.10.0 to 7.12.1 * (T428406) LocalFileMoveBatch: Also update fr_archive_name when moving file * (T424462) tests: Limit ResourcesTest::testRespond to general-purpose skins * (T424462) tests: loop modules inside ResourcesTest::testRespond * (T428289) Email confirmation banner: Remove Test Kitchen A/B test scaffolding * (T421366) Email confirmation banner: Remove obsolete arm_b variant * (T427622) Store indicators in ContentHolder: forward compatibility * changePassword: Add reason option for password change * (T425818) changePassword: Log password change to authentication log Release notes: [0] https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/refs/heads/… Bug report form: [1] https://phabricator.wikimedia.org/maniphest/task/edit/form/1/?tags=MW-1.46-… Open Bugs: [2] https://phabricator.wikimedia.org/tag/mw-1.46-release/ ********************************************************************** Download: https://releases.wikimedia.org/mediawiki/1.46/mediawiki-1.46.0.tar.gz https://releases.wikimedia.org/mediawiki/1.46/mediawiki-1.46.0.zip Download without bundled extensions: https://releases.wikimedia.org/mediawiki/1.46/mediawiki-core-1.46.0.tar.gz https://releases.wikimedia.org/mediawiki/1.46/mediawiki-core-1.46.0.zip Patch to previous version (1.46.0-rc.0): https://releases.wikimedia.org/mediawiki/1.46/mediawiki-1.46.0.patch.gz https://releases.wikimedia.org/mediawiki/1.46/mediawiki-1.46.0.patch.zip GPG signatures for the above: https://releases.wikimedia.org/mediawiki/1.46/mediawiki-core-1.46.0.tar.gz.… https://releases.wikimedia.org/mediawiki/1.46/mediawiki-core-1.46.0.zip.sig https://releases.wikimedia.org/mediawiki/1.46/mediawiki-1.46.0.tar.gz.sig https://releases.wikimedia.org/mediawiki/1.46/mediawiki-1.46.0.zip.sig https://releases.wikimedia.org/mediawiki/1.46/mediawiki-1.46.0.patch.gz.sig https://releases.wikimedia.org/mediawiki/1.46/mediawiki-1.46.0.patch.zip.sig Public keys: https://www.mediawiki.org/keys/keys.html

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MediaWiki-announce July 2026