CVE-2023-37302Public exploitNetwork attack vector

Cross-site scripting via unescaped badge titles

Published Jun 30, 2023 · Updated Nov 26, 2024

Cross-site scripting in Wikibase for MediaWiki 1.39.3 and earlier allows remote attackers to run script via a crafted badge title. SiteLinksView.php inserts formatted badge labels into title attributes without encoding quotes, while wbTemplate leaves quotes unescaped in client-side templates. A victim must view an item using the attacker-controlled badge; injected event handlers then execute in the victim's browser and can access or modify page content.

CVSS severity6.1
Medium
EPSS probability0.69%
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 Wikibase for MediaWiki 1.39.3 and earlier allows remote attackers to run script via a crafted badge title. SiteLinksView.php inserts formatted badge labels into title attributes without encoding quotes, while wbTemplate leaves quotes unescaped in client-side templates. A victim must view an item using the attacker-controlled badge; injected event handlers then execute in the victim's browser and can access or modify page content.

The record

CVE
CVE-2023-37302
Published
Jun 30, 2023
Updated
Nov 26, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 26, 2024Record 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.

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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')
T1189Drive-by Compromise

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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