CVE-2026-14358

Name: CVE-2026-14358
Creator: NVD / NIST
Published: 2026-07-01T19:16:50.073+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.27%

Last modified Jul 9, 2026

CVE-2026-14358 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS 4.0

6.9/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/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

EPSS Probability

0.27%

18.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	>= 1.43.0, < 1.43.9
Mediawiki	Mediawiki	>= 1.44.0, < 1.44.6
Mediawiki	Mediawiki	>= 1.45.0, < 1.45.4

References

https://gerrit.wikimedia.org/r/q/Ibdaa7c852ae83f562e84dddc9c96ad64e2152210Issue Tracking
https://phabricator.wikimedia.org/T430548Issue Tracking

Timeline

Published: Jul 1, 2026
Last Modified: Jul 9, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-14358?

How severe is CVE-2026-14358?

CVE-2026-14358 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.

How do I fix CVE-2026-14358?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST