CVE-2026-103044: EasyTimeline should not serve image maps as application/xml

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-29 · updated 2026-10-01
Weakness: CWE-91

Description

XML injection (aka blind XPath injection) vulnerability in The Wikimedia Foundation Mediawiki - EasyTimeline extension allows XML Injection. This issue affects Mediawiki - EasyTimeline extension: before 1.46.1, 1.45.5, 1.43.10.

Affected products

The Wikimedia Foundation Mediawiki - EasyTimeline extension: before 1.46.1, 1.45.5, 1.43.10 — fixed in 1.43.10, 1.45.5, 1.46.1

How to fix

Upgrade to a fixed version: The Wikimedia Foundation Mediawiki - EasyTimeline extension 1.43.10, 1.45.5, 1.46.1. Check the vendor advisory for mitigations.

References

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/timeline/+/1346078
https://phabricator.wikimedia.org/T428006

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