Description
Improper Input Validation vulnerability in The Wikimedia Foundation Mediawiki - Extension:SimpleCalendar allows Cross-Site Scripting (XSS).This issue affects Mediawiki - Extension:SimpleCalendar: from 1.39 through 1.43.
References (2)
Core 2
Core References
Issue Tracking
https://phabricator.wikimedia.org/T383472
Scores
CVSS v4
6.9
EPSS
0.0033
EPSS Percentile
24.5%
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-20
Status
published
Products (1)
The Wikimedia Foundation/Mediawiki - Extension:SimpleCalendar
1.39 - 1.43
Published
Apr 11, 2025
Tracked Since
Feb 18, 2026