6.9

CVE-2026-14358: mediawiki Cross-site Scripting

CVSS: 6.9v4.0MediumAnalyzed
Published 01-07-2026Last modified 10-07-2026
Open JSON

Vulnerability summary

CVE-2026-14358 is a medium (CVSS 6.9) Cross-site Scripting vulnerability in mediawiki. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.2% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.9/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.30%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-07-2026
    PublishedVulnerability first disclosed.
  2. 10-07-2026
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

0.00 pp

From 0.30% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.30%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Mediawiki1 product
  • mediawiki≥ 1.43.0, < 1.43.9 | ≥ 1.44.0, < 1.44.6 | ≥ 1.45.0, < 1.45.4
The wikimedia foundation1 product

2 vendors · 2 products

References

2 links