# Wikimedia vulnerabilities

Source: https://junglewise.ai/threats/vendors/wikimedia  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/wikimedia.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 9 vulnerabilities in Wikimedia: 0 in the last 7 days and 8 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-103440, was published on 30 September 2026. Nothing in the last four weeks, down from 8 vulnerabilities in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 8
- All time: 9 (0 critical, 0 exploited in the wild)

## About Wikimedia

Global nonprofit organization that operates Wikipedia and other free knowledge projects.

## Latest Wikimedia vulnerabilities

- [CVE-2026-103440: Wikimedia MediaWiki PageTriage information disclosure in API](https://junglewise.ai/threats/cve-2026-103440-exposure-of-sensitive-information-through-data-queries) (info, published 30 Sep 2026)
- [CVE-2026-96877: MediaWiki Cargo extension reflected cross-site scripting](https://junglewise.ai/threats/cve-2026-96877-improper-neutralization-of-input-during-web-page-generation-cross) (info, published 25 Sep 2026)
- [CVE-2026-96876: Mediawiki Cargo extension reflected cross-site scripting](https://junglewise.ai/threats/cve-2026-96876-improper-neutralization-of-input-during-web-page-generation-cross) (info, published 25 Sep 2026)
- [CVE-2026-96875: MediaWiki Cargo extension stored cross-site scripting](https://junglewise.ai/threats/cve-2026-96875-improper-neutralization-of-input-during-web-page-generation-cross) (info, published 25 Sep 2026)
- [CVE-2026-96874: MediaWiki Cargo extension stored cross-site scripting](https://junglewise.ai/threats/cve-2026-96874-improper-neutralization-of-input-during-web-page-generation-cross) (info, published 25 Sep 2026)
- [CVE-2026-96873: MediaWiki CirrusSearch extension reflected XSS](https://junglewise.ai/threats/cve-2026-96873-improper-neutralization-of-input-during-web-page-generation-cross) (info, published 24 Sep 2026)
- [CVE-2024-23176: MediaWiki MassMessage extension XSS in i18n key massmessage-form-page-help](https://junglewise.ai/threats/cve-2024-23176-mediawiki-massmessage-extension-xss-in-i18n-key-massmessage-form) (medium, CVSS 5.4, published 14 Sep 2026)
- [CVE-2023-37252: MediaWiki CheckUser extension information disclosure in log](https://junglewise.ai/threats/cve-2023-37252-mediawiki-checkuser-extension-information-disclosure-in-log) (low, CVSS 3.1, published 14 Sep 2026)
- [CVE-2026-0671: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia…](https://junglewise.ai/threats/cve-2026-0671-improper-neutralization-of-input-during-web-page-generation-xss-or) (medium, CVSS 6.1, published 8 Jan 2026)

## Most severe Wikimedia vulnerabilities

- [CVE-2026-0671: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia…](https://junglewise.ai/threats/cve-2026-0671-improper-neutralization-of-input-during-web-page-generation-xss-or) (medium, CVSS 6.1, published 8 Jan 2026)
- [CVE-2024-23176: MediaWiki MassMessage extension XSS in i18n key massmessage-form-page-help](https://junglewise.ai/threats/cve-2024-23176-mediawiki-massmessage-extension-xss-in-i18n-key-massmessage-form) (medium, CVSS 5.4, published 14 Sep 2026)
- [CVE-2023-37252: MediaWiki CheckUser extension information disclosure in log](https://junglewise.ai/threats/cve-2023-37252-mediawiki-checkuser-extension-information-disclosure-in-log) (low, CVSS 3.1, published 14 Sep 2026)
- [CVE-2026-96873: MediaWiki CirrusSearch extension reflected XSS](https://junglewise.ai/threats/cve-2026-96873-improper-neutralization-of-input-during-web-page-generation-cross) (info, published 24 Sep 2026)
- [CVE-2026-103440: Wikimedia MediaWiki PageTriage information disclosure in API](https://junglewise.ai/threats/cve-2026-103440-exposure-of-sensitive-information-through-data-queries) (info, published 30 Sep 2026)
- [CVE-2026-96877: MediaWiki Cargo extension reflected cross-site scripting](https://junglewise.ai/threats/cve-2026-96877-improper-neutralization-of-input-during-web-page-generation-cross) (info, published 25 Sep 2026)
- [CVE-2026-96876: Mediawiki Cargo extension reflected cross-site scripting](https://junglewise.ai/threats/cve-2026-96876-improper-neutralization-of-input-during-web-page-generation-cross) (info, published 25 Sep 2026)
- [CVE-2026-96875: MediaWiki Cargo extension stored cross-site scripting](https://junglewise.ai/threats/cve-2026-96875-improper-neutralization-of-input-during-web-page-generation-cross) (info, published 25 Sep 2026)
- [CVE-2026-96874: MediaWiki Cargo extension stored cross-site scripting](https://junglewise.ai/threats/cve-2026-96874-improper-neutralization-of-input-during-web-page-generation-cross) (info, published 25 Sep 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 8 vulnerabilities in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 2 | 0 | 0 |
| 21 Sep 2026 | 5 | 0 | 0 |
| 28 Sep 2026 | 1 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Wikimedia vulnerabilities", https://junglewise.ai/threats/vendors/wikimedia, 9 November 2026.