Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in The Wikimedia Foundation Mediawiki - LanguageSelector Extension allows Code Injection.This issue affects Mediawiki - LanguageSelector Extension: from master before 1.39.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact Low

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00046.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
The Wikimedia Foundation Mediawiki - LanguageSelector Extension unaffected
Version Status Constraints
master affected
< 1.39

No data.

No data.

Vendor Product Confidence Versions
Mediawiki Mediawiki — —
Wikimedia Languageselector — —

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Subscriptions

Vendors Products
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Tracking

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://gerrit.wikimedia.org/r/q/I338288e756de4e58a3f1f02a9c205b37f4927935 cve-icon cve-icon
https://phabricator.wikimedia.org/T399724 cve-icon cve-icon
History

Tue, 21 Oct 2025 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Mediawiki
Mediawiki mediawiki
Wikimedia
Wikimedia languageselector
Vendors & Products Mediawiki
Mediawiki mediawiki
Wikimedia
Wikimedia languageselector

Mon, 20 Oct 2025 20:00:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 20 Oct 2025 19:45:00 +0000

Type Values Removed Values Added
Description Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in The Wikimedia Foundation Mediawiki - LanguageSelector Extension allows Code Injection.This issue affects Mediawiki - LanguageSelector Extension: from master before 1.39.
Title Improperly sanitized style parameter in LanguageSelector
Weaknesses CWE-74
References
Metrics cvssV4_0

{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:L/SI:L/SA:L'}
cve-icon MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published:

Updated: 2025-10-20T19:38:21.714Z

Reserved: 2025-10-20T17:42:38.150Z

Link: CVE-2025-62697

cve-icon Vulnrichment

Updated: 2025-10-20T19:38:13.419Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-20T20:15:37.870

Modified: 2025-10-21T19:31:25.450

Link: CVE-2025-62697

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-10-21T09:39:42Z

Weaknesses