What is the CVSS score of CVE-2021-42041?

CVE-2021-42041 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 1.0%.

Is there a public PoC exploit available for CVE-2021-42041?

Yes, a public proof-of-concept exploit is available for CVE-2021-42041. Prioritise patching immediately. EPSS: 1.0%.

Is there a patch available for CVE-2021-42041?

Yes, a patch is available for CVE-2021-42041. Update the affected software to the latest version immediately.

Mediawiki CVE-2021-42041

MEDIUM

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

2021-10-06 cve@mitre.org

XSS Mediawiki

6.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.1 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

Oct 06, 2021 - 21:15 nvd

MEDIUM 6.1

DescriptionNVD

An issue was discovered in CentralAuth in MediaWiki through 1.36.2. The rightsnone MediaWiki message was not being properly sanitized and allowed for the injection and execution of HTML and JavaScript via the setchange log.

AnalysisAI

An issue was discovered in CentralAuth in MediaWiki through 1.36.2. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. An issue was discovered in CentralAuth in MediaWiki through 1.36.2. The rightsnone MediaWiki message was not being properly sanitized and allowed for the injection and execution of HTML and JavaScript via the setchange log. Affected products include: Mediawiki. Version information: through 1.36.2..

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.