CVE-2023-22911Public exploitNetwork attack vector

Cross-site scripting via attribute-context widget replacement

Published Jan 10, 2023 · Updated Apr 7, 2025

Cross-site scripting in the MediaWiki Widgets extension allows remote attackers to execute JavaScript through crafted widget markup. WidgetRenderer substitutes rendered widget output for a marker after MediaWiki has sanitized the surrounding HTML, including markers inside attribute values. An attacker must be able to place a widget invocation on a page, and code runs in a visitor's browser when the affected attribute is activated, such as by hovering.

CVSS severity6.1
Medium
EPSS probability0.57%
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 the MediaWiki Widgets extension allows remote attackers to execute JavaScript through crafted widget markup. WidgetRenderer substitutes rendered widget output for a marker after MediaWiki has sanitized the surrounding HTML, including markers inside attribute values. An attacker must be able to place a widget invocation on a page, and code runs in a visitor's browser when the affected attribute is activated, such as by hovering.

The record

CVE
CVE-2023-22911
Published
Jan 10, 2023
Updated
Apr 7, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A: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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

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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