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CVE-2023-5718

4.3 · MEDIUM

The Vue.js Devtools extension was found to leak screenshot data back to a malicious web page via the standard `postMessage()` API.

Published Oct 23, 2023CWE-200EPSS 0.25%

Overview

CVE-2023-5718 is a medium-severity vulnerability. It was published on October 23, 2023 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The Vue.js Devtools extension was found to leak screenshot data back to a malicious web page via the standard `postMessage()` API. By creating a malicious web page with an iFrame targeting a sensitive resource (i.e. a locally accessible file or sensitive website), and registering a listener on the web page, the extension sent messages back to the listener, containing the base64 encoded screenshot data of the sensitive resource.

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

GitHubgist.github.com/CalumHutton/bdb97077a66021ed455f87823cd7c7cbGitHubgist.github.com/CalumHutton/bdb97077a66021ed455f87823cd7c7cb

How CyberStrike helps

Frequently asked questions

What is CVE-2023-5718?

CVE-2023-5718 is a medium-severity vulnerability. It was published on October 23, 2023 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2023-5718?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-5718?

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-2023-5718?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-5718 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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