PT-2025-27808 · Mediawiki · Campaignevents Extension+1

Daimona · Published 2025-07-03 · Updated 2025-10-01 · CVE-2025-53490

Positive Technologies (AI Summary)

CVSS v3.1

5.6

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions: Mediawiki - CampaignEvents Extension versions 1.43.X through 1.43.1

Description: The issue affects the Mediawiki - CampaignEvents Extension, allowing Cross-Site Scripting (XSS) due to improper neutralization of input during web page generation.

Recommendations: For Mediawiki - CampaignEvents Extension versions 1.43.X through 1.43.1, update to version 1.43.2 or later to resolve the issue.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-53490

Affected Products

Campaignevents Extension

Mediawiki

References · 8

• https://osv.dev/vulnerability/CVE-2025-53490 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-53490 · Security Note
• https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CampaignEvents/+/1165949 · Patch
• https://phabricator.wikimedia.org/T395622 · Patch
• https://twitter.com/ZeroDayCVE/status/1940810906600198339 · Twitter Post
• https://twitter.com/CVEnew/status/1940807642139513307 · Twitter Post
• https://t.me/cveNotify/137050 · Telegram Post
• https://t.me/cvenotify/127641 · Telegram Post