CVE-2025-11261

Severity CVSS v4.0:

NONE

Type:

CWE-79 Cross-Site Scripting (XSS)

Publication date:

03/02/2026

Last modified:

25/03/2026

Description

Improper Neutralization of Input During Web Page Generation (XSS or &#39;Cross-site Scripting&#39;) vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Language/mediawiki.Language.Js.<br /> <br /> This issue affects MediaWiki: from * before 1.39.15, 1.43.5, 1.44.2.

Impact

Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:U CVSS v4.0 Severity and Metrics:

Base Score: 0.00 NONE
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:U

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): High
User Interaction (UI): None
Confidentiality (VC): None
Integrity (VI): None
Availability (VA): None
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None
Exploit Maturity (E): Unreported

Base Score 4.0

0.00

Severity 4.0

NONE

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 6.10 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Changed
Confidentiality (C): Low
Integrity (I): Low
Availability (A): None

Base Score 3.x

6.10

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:mediawiki:mediawiki::::::::		1.39.15 (excluding)
cpe:2.3:a:mediawiki:mediawiki::::::::	1.43.0 (including)	1.43.5 (excluding)
cpe:2.3:a:mediawiki:mediawiki::::::::	1.44.0 (including)	1.44.2 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2025-11261

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools