What is CVE-2026-58519?

CVE-2026-58519 is a medium-severity vulnerability in MediaWiki Cargo, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-07-01.

How severe is CVE-2026-58519?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in MediaWiki Cargo

CVE-2026-58519

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - Cargo Extension allows Stored XSS. This issue affects Mediawiki - Cargo Extension: from * before 3.9.1.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (3.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Mediawiki Cargo
The Wikimedia Foundation Mediawiki - Cargo Extension

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

c4f26cc8-17ff-4c99-b5e2-38fc1793eacc (Issue Tracking)
c4f26cc8-17ff-4c99-b5e2-38fc1793eacc (Issue Tracking)

Frequently asked questions

What is CVE-2026-58519?: CVE-2026-58519 is a medium-severity vulnerability in MediaWiki Cargo, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-07-01.
How severe is CVE-2026-58519?: Medium severity. CVSS v3 base score is 5.4 out of 10.