What is CVE-2025-53490?

CVE-2025-53490 is a medium-severity vulnerability in Jly Campaignevents, classified under Cross-site Scripting. CVSS score: 5.6/10. Published 2025-07-03.

How severe is CVE-2025-53490?

Medium severity. CVSS v3 base score is 5.6 out of 10.

XSS in Jly Campaignevents

CVE-2025-53490

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - CampaignEvents Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - CampaignEvents Extension: from 1.43.X before 1.43.2.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (12.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Jly Campaignevents
Mediawiki
Wikimedia Foundation Mediawiki - Campaignevents Extension — versions 1.43.x

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2025-53490?: CVE-2025-53490 is a medium-severity vulnerability in Jly Campaignevents, classified under Cross-site Scripting. CVSS score: 5.6/10. Published 2025-07-03.
How severe is CVE-2025-53490?: Medium severity. CVSS v3 base score is 5.6 out of 10.