Medium severity · published Jul 1, 2026
CVE-2026-14358
Stored XSS in Wikimedia Chart pie tooltip via Data:*.tab field title
6.1
CVSS
0.3%
EPSS
No
On KEV
Description
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - Charts Extension allows Cross-Site Scripting (XSS).
This issue affects Mediawiki - Charts Extension: from * before 1.43.9,1.44.6,1.45.4.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MC
Mediawiki - Charts Extension · The Wikimedia Foundation
before 1.43.9,1.44.6,1.45.4 · source: vendor
ME
Mediawiki · Mediawiki
1.43.0 before 1.43.9; 1.44.0 before 1.44.6; 1.45.0 before 1.45.4 · source: NVD
Affected product
MC
Mediawiki - Charts Extension
The Wikimedia Foundation