What is the CVSS score of CVE-2026-22713?

CVE-2026-22713 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Mediawiki are affected by CVE-2026-22713?

CVE-2026-22713 presents moderate security risk, a cross-site scripting vulnerability rated CVSS 5.4. Attackers could inject scripts to steal sessions or perform actions as authenticated users.. A patch is available.

Is there a public PoC exploit available for CVE-2026-22713?

Yes, a public proof-of-concept exploit is available for CVE-2026-22713. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-22713?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Mediawiki CVE-2026-22713

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-01-09 c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

Mediawiki XSS Growthexperiments

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 12, 2026 - 17:47 vuln.today

Public exploit code

Patch released

Feb 12, 2026 - 17:47 nvd

Patch available

CVE Published

Jan 09, 2026 - 00:15 nvd

MEDIUM 5.4

DescriptionCVE.org

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - GrowthExperiments Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - GrowthExperiments Extension: 1.45, 1.44, 1.43, 1.39.

AnalysisAI

Cross-site scripting (XSS) in MediaWiki's GrowthExperiments extension (versions 1.39, 1.43, 1.44, 1.45) allows authenticated attackers to inject malicious scripts through improper input validation, with public exploit code available. An attacker with user privileges can exploit this vulnerability to perform actions on behalf of other users or steal sensitive information due to the low complexity attack vector and user interaction requirement. A patch is available for affected installations.

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Growthexperiments. Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - GrowthExperiments Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - GrowthExperiments Extension: 1.45, 1.44, 1.43, 1.39.

RemediationAI

A vendor patch is available — apply it immediately. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.