# CVE-2026-103044: MediaWiki EasyTimeline XML injection vulnerability

Source: https://junglewise.ai/threats/cve-2026-103044-xml-injection-aka-blind-xpath-injection-vulnerability-in-the  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-29. Updated: 2026-09-29  
License: CC BY 4.0 with a link back

CVE-2026-103044 · Severity: info · Published 2026-09-29

The EasyTimeline extension for MediaWiki, used to render timeline diagrams in wiki pages, contains an XML injection vulnerability that could allow attackers to inject malicious XML or XPath expressions. An attacker with the ability to edit wiki pages could exploit this to manipulate timeline rendering or access unauthorized data through blind XPath injection techniques. This affects wiki installations running vulnerable versions of the extension.

Vendors: [Wikimedia Foundation](https://junglewise.ai/threats/vendors/wikimedia-foundation).

## Quick answers

**Is CVE-2026-103044 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-103044 being exploited in the wild.

**How severe is CVE-2026-103044?** Informational severity, published 29 September 2026.

**Which products and versions are affected?** Wikimedia Foundation MediaWiki EasyTimeline extension before 1.46.1, 1.45.5, 1.43.10.

**Is there a fix for CVE-2026-103044?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-103044 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-103044?** Check whether you run Wikimedia Foundation MediaWiki EasyTimeline extension at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The EasyTimeline extension fails to properly validate or sanitize XML input when processing timeline markup, allowing XML and XPath injection attacks. An authenticated or unauthorized user capable of editing pages can inject crafted XML payloads to bypass security controls or extract data through blind XPath injection. The vulnerability is fixed in versions 1.46.1, 1.45.5, and 1.43.10 or later.

## Affected products

- Wikimedia Foundation MediaWiki EasyTimeline extension before 1.46.1, 1.45.5, 1.43.10

## Timeline

- 2026-09-29: disclosed

## References

- [https://gerrit.wikimedia.org/r/c/mediawiki/extensions/timeline/+/1346078](https://gerrit.wikimedia.org/r/c/mediawiki/extensions/timeline/+/1346078)
- [https://phabricator.wikimedia.org/T428006](https://phabricator.wikimedia.org/T428006)