4.3

CVE-2026-22712: the wikimedia foundation mediawiki - approvedrevs extension Improper Encoding or Escaping of Output

CVSS: 4.3v3.1MediumAnalyzed
Published 09-01-2026Last modified 09-01-2026
Open JSON

Vulnerability summary

CVE-2026-22712 is a medium (CVSS 4.3) Improper Encoding or Escaping of Output vulnerability in the wikimedia foundation mediawiki - approvedrevs extension. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 13.9% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (NVD)
EPSS score
0.24%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 09-01-2026
    PublishedVulnerability first disclosed.
  2. 09-01-2026
    Last modifiedVulnerability information updated.

Description

Improper Encoding or Escaping of Output due to magic word replacement in ParserAfterTidy vulnerability in The Wikimedia Foundation Mediawiki - ApprovedRevs Extension allows Input Data Manipulation.This issue affects Mediawiki - ApprovedRevs Extension: 1.45, 1.44, 1.43, 1.39.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

0.00 pp

From 0.24% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.24%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (phabricator.wikimedia.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

The wikimedia foundation1 product
Wikiworks1 product

2 vendors · 2 products

References

2 links