Wikimedia Foundation has 16 CVEs on record. Disclosure cadence is accelerating: 16 in the last 90 days against 0 in the 90 before. The busiest recent month was September 2026 with 16. The median CVSS is 6.1 (medium), with 2 rated critical. None have a confirmed exploitation report. The dominant weakness classes are CWE-79 (7) and CWE-200 (4). Most affected products: Mediawiki - TemplateSandbox Extension (2), Mediawiki - WikiLambda Extension (2), Mediawiki - Wikibase Extension (2).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 6.1
- Publish → KEV
- —
- Last 90 days
- 16 prev 0
Weakness classes
Products
- Mediawiki - TemplateSandbox Extension 2
- Mediawiki - WikiLambda Extension 2
- Mediawiki - Wikibase Extension 2
- Mediawiki - CentralAuth Extension 1
- Mediawiki - DataTransfer Extension 1
- Mediawiki - EventBus Extension 1
Worst active — by depth score
CVE-2026-100382Critical· 10.0Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Wikimedia Foundation Mediawiki - ExternalData Extension allows OS Command Injection. This issue affects Mediawiki - ExternalData…67CVE-2026-102796High· 7.5Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Wikimedia Foundation Mediawiki - UserPageViewTracker Extension allows SQL Injection. This issue affects Mediawiki - UserPageViewTracke…53CVE-2026-100242High· 7.5Dependency on Vulnerable Third-Party Component and Uncontrolled Resource Consumption vulnerability in Wikimedia Foundation Mediawiki - DataTransfer Extension allows Excessive Allocation. This issue affects Mediawiki - DataTransfer Exten…53CVE-2026-100240Critical· 9.1Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - TemplateSandbox Extension: from * before 1…50CVE-2026-100244High· 7.5Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows Excavation. This issue affects Mediawiki - CentralAuth Extension: from * before 1.46.1, 1.45.5, 1.…41
Wikimedia Foundation vulnerabilities
CVEs affecting Wikimedia Foundation, newest first. Open any entry for full detail, references, and exploit status.
16 CVEsRSS
CVE-2026-102796High· 7.5PoCImproper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Wikimedia Foundation Mediawiki - UserPageViewTracker Extension allows SQL Injection. This issue affects Mediawiki - UserPageViewTracke…
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Wikimedia Foundation Mediawiki - UserPageViewTracker Extension allows SQL Injection. This issue affects Mediawiki - UserPageViewTracke…
CVE-2026-100245Medium· 6.1Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Stored XSS. This issue affects Mediawiki - Wikibase Extension: from …
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Stored XSS. This issue affects Mediawiki - Wikibase Extension: from …
CVE-2026-100244High· 7.5Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows Excavation. This issue affects Mediawiki - CentralAuth Extension: from * before 1.46.1, 1.45.5, 1.…
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows Excavation. This issue affects Mediawiki - CentralAuth Extension: from * before 1.46.1, 1.45.5, 1.…
CVE-2026-100243Medium· 6.1Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - WikiSEO Extension allows Stored XSS. This issue affects Mediawiki - WikiSEO Extension: from * …
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - WikiSEO Extension allows Stored XSS. This issue affects Mediawiki - WikiSEO Extension: from * …
CVE-2026-100242High· 7.5PoCDependency on Vulnerable Third-Party Component and Uncontrolled Resource Consumption vulnerability in Wikimedia Foundation Mediawiki - DataTransfer Extension allows Excessive Allocation. This issue affects Mediawiki - DataTransfer Exten…
Dependency on Vulnerable Third-Party Component and Uncontrolled Resource Consumption vulnerability in Wikimedia Foundation Mediawiki - DataTransfer Extension allows Excessive Allocation. This issue affects Mediawiki - DataTransfer Exten…
CVE-2026-100241High· 7.5Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - EventBus Extension allows Excavation. This issue affects Mediawiki - EventBus Extension: 1.47.0-alpha.
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - EventBus Extension allows Excavation. This issue affects Mediawiki - EventBus Extension: 1.47.0-alpha.
CVE-2026-100238Medium· 6.1Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Flow Extension allows Stored XSS. This issue affects Mediawiki - Flow Extension: from * before…
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Flow Extension allows Stored XSS. This issue affects Mediawiki - Flow Extension: from * before…
CVE-2026-100240Critical· 9.1Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - TemplateSandbox Extension: from * before 1…
Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - TemplateSandbox Extension: from * before 1…
CVE-2026-100383Medium· 4.8Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - WikiLam…
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - WikiLam…
CVE-2026-100381Medium· 5.3PoCImproper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - UploadWizard Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - Uploa…
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - UploadWizard Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - Uploa…
CVE-2026-100382Critical· 10.0PoCImproper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Wikimedia Foundation Mediawiki - ExternalData Extension allows OS Command Injection. This issue affects Mediawiki - ExternalData…
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Wikimedia Foundation Mediawiki - ExternalData Extension allows OS Command Injection. This issue affects Mediawiki - ExternalData…
CVE-2026-100380Medium· 5.3PoCImproper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - Wikibase …
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - Wikibase …
CVE-2026-100379Medium· 5.3Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Wikipedia Android App allows Accessing/Intercepting/Modifying HTTP Cookies. This issue affects Wikipedia Android App: main.
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Wikipedia Android App allows Accessing/Intercepting/Modifying HTTP Cookies. This issue affects Wikipedia Android App: main.
CVE-2026-100378Medium· 5.3Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - Translate Extension allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - Translate Extension: from * before 1.46.1, 1.45.…
Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - Translate Extension allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - Translate Extension: from * before 1.46.1, 1.45.…
CVE-2026-100377Medium· 6.9Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Excavation. This issue affects Mediawiki - WikiLambda Extension: 1.47.0-alpha
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Excavation. This issue affects Mediawiki - WikiLambda Extension: 1.47.0-alpha. The issue has been r…
CVE-2026-100376Medium· 4.8Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - Te…
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - Te…