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

Critical 9.8 Published Updated

Attackers can exploit XML injection in the EasyTimeline extension to read sensitive data or bypass security controls.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-103044?

CVE-2026-103044 is a critical vulnerability in The Wikimedia Foundation Mediawiki - EasyTimeline extension, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-22, CWE-91

Which versions are affected by CVE-2026-103044?

How do I fix CVE-2026-103044?

No fix has been published for CVE-2026-103044 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-103044 being exploited?

There is no known exploitation of CVE-2026-103044 in the wild and no public exploit code.

Sources

Also known as GHSA-3cxg-pq55-vhm5, UBUNTU-CVE-2026-103044.

Is CVE-2026-103044 in your software?

Upload an SBOM and sbomify checks it against every vulnerability here, every day.

Check your SBOMs for free