Vendor
Wikimedia Foundation vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 53 vulnerabilities in Wikimedia Foundation: 11 in the last 7 days and 32 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-100383, was published on 25 September 2026. 3 technologies have a page of their own.
- Last 7 days
- 11
- Last 90 days
- 32
- Critical, all time
- 0
- Exploited in the wild
- 0
About Wikimedia Foundation
The Wikimedia Foundation is a non-profit organization that operates Wikipedia and other wiki projects.
Wikimedia Foundation technologies
Latest Wikimedia Foundation vulnerabilities
- CVE-2026-100383: Mediawiki WikiLambda extension stored XSS in Visual Editor integrationinfo
- CVE-2026-100382: Wikimedia MediaWiki ExternalData extension OS command injectioninfo
- CVE-2026-100381: Wikimedia Mediawiki UploadWizard DOM XSS in Flickr titlesinfo
- CVE-2026-96879: Wikimedia MediaWiki FlaggedRevs information exposure in storageinfo
- CVE-2026-100380: MediaWiki Wikibase reflected XSS in Special:SetLabelinfo
- CVE-2026-100379: Wikimedia Wikipedia Android App CentralAuth cookie disclosureinfo
- CVE-2026-100378: MediaWiki Translate extension missing authorization in sandbox reminder actioninfo
- CVE-2026-100377: MediaWiki WikiLambda information disclosure in revision handlinginfo
- CVE-2026-100376: MediaWiki TemplateSandbox cross-site scripting via user namespaceinfo
- CVE-2026-100237: Wikimedia Foundation Mediawiki Thanks Extension stored XSSmediumCVSS 6.1
- CVE-2026-96872: Wikimedia MediaWiki WikiLambda privilege escalationinfoEPSS 0.2%
- CVE-2026-58517: Wikimedia MediaWiki WikiLambda Extension authentication bypassinfoCVSS 6.9
- CVE-2026-14358: Wikimedia MediaWiki Charts Extension Stored XSS in Pie TooltipsinfoCVSS 6.9
- CVE-2026-58520: Wikimedia MediaWiki UrlShortener open redirect via missing regex anchorsinfoCVSS 6.9
- CVE-2026-58037: Wikimedia Foundation MediaWiki XSS in Logging and Special PagesinfoCVSS 0
- CVE-2026-58036: Wikimedia Foundation MediaWiki Information Exposure in User APIinfoCVSS 2.1
- CVE-2026-58033: Wikimedia Foundation MediaWiki information disclosure in InfoActioninfoCVSS 5.3
- CVE-2026-58032: Wikimedia Foundation MediaWiki XSS in mediawiki.Api componentinfoCVSS 5.3
- CVE-2026-58030: Wikimedia Foundation SyntaxHighlight_GeSHi XSS in SyntaxHighlight.phpinfoCVSS 5.3
- CVE-2026-58029: Wikimedia Foundation MediaWiki improper authentication in account management componentsinfoCVSS 5.3
- CVE-2026-58028: Wikimedia Foundation MediaWiki and CentralAuth XSSinfoCVSS 0
- CVE-2026-58027: Wikimedia Foundation AbuseFilter information disclosure in QueryAbuseFiltersinfoCVSS 5.3
- CVE-2026-58026: Wikimedia Foundation MediaWiki information disclosure in Parser.phpinfoCVSS 0
- CVE-2026-58025: Wikimedia Foundation MediaWiki deserialization in WikiImporterinfoCVSS 5.9
- CVE-2026-58024: Wikimedia Foundation MediaWiki information disclosure in ApiUserrightsinfoCVSS 5.1
Most severe Wikimedia Foundation vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-34089: Vulnerability in Wikimedia Foundation Scribunto. This issue affects Scribunto: from 1.45.0 before 1.45.2.highCVSS 7.5EPSS 0.4%
- CVE-2026-34092: Wikimedia Foundation MediaWiki information disclosure in Skin.phphighCVSS 7.5
- CVE-2026-34091: Wikimedia Foundation MediaWiki sensitive information disclosurehighCVSS 7.5
- CVE-2026-34090: Wikimedia Foundation CheckUser information exposure in Suggested InvestigationshighCVSS 7.5
- CVE-2026-34088: Wikimedia Foundation MediaWiki sensitive information exposurehighCVSS 7.5
- CVE-2026-34087: Wikimedia Foundation OATHAuth sensitive information exposurehighCVSS 7.5
- CVE-2026-39839: Wikimedia MediaWiki Cargo Extension stored XSS in map formatmediumCVSS 6.1EPSS 0.2%
- CVE-2026-39841: Wikimedia MediaWiki Cargo Extension stored XSS in list fieldsmediumCVSS 6.1EPSS 0.2%
- CVE-2026-100237: Wikimedia Foundation Mediawiki Thanks Extension stored XSSmediumCVSS 6.1
- CVE-2026-34095: Wikimedia Foundation MediaWiki incorrect Content-Type in ActionEntryPointmediumCVSS 6.1
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 21 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 11 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/wikimedia-foundation.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Wikimedia Foundation vulnerabilities", https://junglewise.ai/threats/vendors/wikimedia-foundation, 26 September 2026.