What’s Vulnerable › Vulnerabilities

CVE-2023-5718

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-10-23 · updated 2026-06-17
• Weakness: CWE-200

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.

Affected products

• Vue.js devtools: 6.5.0

References

• https://gist.github.com/CalumHutton/bdb97077a66021ed455f87823cd7c7cb
• https://gist.github.com/CalumHutton/bdb97077a66021ed455f87823cd7c7cb

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