CVE-2026-22714Network attack vector

Browser script execution via unescaped interface messages

Published Jan 8, 2026 · Updated Jan 8, 2026

Cross-site scripting in Wikimedia Foundation Monaco 1.39, 1.43, 1.44, and 1.45 allows remote attackers to run script in wiki users' browsers. MonacoTemplate.php emits the monaco-footer-improve-linktext, monaco-view-history, and permalink interface messages as raw HTML without escaping. The public issue does not identify how attackers control those messages; exploitation requires passive user interaction and additional attack conditions.

CVSS severity2.3
Low
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Wikimedia Foundation Monaco 1.39, 1.43, 1.44, and 1.45 allows remote attackers to run script in wiki users' browsers. MonacoTemplate.php emits the monaco-footer-improve-linktext, monaco-view-history, and permalink interface messages as raw HTML without escaping. The public issue does not identify how attackers control those messages; exploitation requires passive user interaction and additional attack conditions.

The record

CVE
CVE-2026-22714
Published
Jan 8, 2026
Updated
Jan 8, 2026
Vendor
Wikimedia Foundation
Product
Monaco
Classifications
CWE-79, CAPEC-63, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.39
  2. Affected versionversion=1.43
  3. Affected versionversion=1.44
  4. Affected versionversion=1.45

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wikimedia Foundation · Monacoversion=1.39; version=1.43; version=1.44; version=1.45

Published CVSS scores

2.3Wikimedia FoundationCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-63Cross-Site Scripting (XSS)
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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