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npm package

@github/paste-markdown

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

Open advisories

1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Medium, CVSS 6.5npmAmendedPublished

    Clipboard-based DOM-XSS

    CVE-2021-37700 · GHSA-gpfj-4j6g-c4w9

    Affected
    • npm @github/paste-markdown < 0.3.4
    Fixed in
    0.3.4· Vendor fix available
    Issue
    Impact A self Cross-Site Scripting vulnerability exists in the @github/paste-markdown library. If the clipboard data contains the string <table, a div is dynamically created, and the clipboard content is copied into its innerHTML property without any sanitization, resulting in improper execution of JavaScript in the browser of the victim (the user who pasted the code). Users directed to copy text from a malicious website and paste it into pages that utilize this library are affected. The following @github/paste-markdown code snippet is triggered when the user pastes something and the browser's clipboard data contains an entry whose content-type is text/HTML. Patches A security patch was released in version 0.3.4. Workarounds A Content Security Policy that prevents unsafe-inline helps reduce the likelihood of this vulnerability being exploited in modern browsers. <!-- References Are there any links users can visit to find out more? For more information If you have any questions or…

    Recommended action: Upgrade to 0.3.4 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:osv.dev (1)github.com (2)Source checked Evidence →