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CVE-2020-11051

6.9 · MEDIUM

In Wiki.js before 2.3.81, there is a stored XSS in the Markdown editor.

Published May 5, 2020CWE-79EPSS 0.61%

Overview

CVE-2020-11051 is a medium-severity vulnerability. It was published on May 5, 2020 and has a CVSS 3.1 base score of 6.9 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.9, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

In Wiki.js before 2.3.81, there is a stored XSS in the Markdown editor. An editor with write access to a page, using the Markdown editor, could inject an XSS payload into the content. If another editor (with write access as well) load the same page into the Markdown editor, the XSS payload will be executed as part of the preview panel. The rendered result does not contain the XSS payload as it is stripped by the HTML Sanitization security module. This vulnerability only impacts editors loading the malicious page in the Markdown editor. This has been patched in 2.3.81.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/Requarks/wiki/commit/05e8a71ceff39167aee830ba8ad5eb0161f2911aGitHubgithub.com/Requarks/wiki/security/advisories/GHSA-vj72-c9vq-qxrvGitHubgithub.com/Requarks/wiki/commit/05e8a71ceff39167aee830ba8ad5eb0161f2911aGitHubgithub.com/Requarks/wiki/security/advisories/GHSA-vj72-c9vq-qxrv

How CyberStrike helps

Frequently asked questions

What is CVE-2020-11051?

CVE-2020-11051 is a medium-severity vulnerability. It was published on May 5, 2020 and has a CVSS 3.1 base score of 6.9 (MEDIUM).

How severe is CVE-2020-11051?

This vulnerability has a CVSS 3.1 base score of 6.9, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2020-11051?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-11051?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-11051 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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