CVE-2026-58038 Stored XSS through javascript URLs in SVGs generated by EasyTimeline

None 0.0 Published 1 Jul 2026 Updated 1 Jul 2026

Attackers can inject malicious JavaScript via SVGs in EasyTimeline, leading to stored XSS and potential session hijacking.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-58038?

CVE-2026-58038 is a cross-site scripting vulnerability in Mediawiki Mediawiki, published on 1 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation timeline.

This vulnerability is associated with program files includes/Timeline.Php, scripts/EasyTimeline.Pl.

This issue affects timeline: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

Weakness: CWE-79

Which versions are affected by CVE-2026-58038?

It affects 1 product.

Products include Mediawiki Mediawiki.

How do I fix CVE-2026-58038?

Upgrade to a fixed version.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-58038 being exploited?

There is no known exploitation of CVE-2026-58038 in the wild and no public exploit code.

All Mediawiki Mediawiki vulnerabilities

Sources

Also known as GHSA-pm32-8hr8-567h, MINI-f7xr-p993-9qc5, MINI-hhgg-fjh2-6xxm, MINI-xrgw-4px4-4pfx.