GHSA-j386-3444-qgwg Trix allows Cross-site Scripting via `javascript:` url in a link

• npm trix: < 2.1.12 → fixed in 2.1.12

The Trix editor, versions prior to 2.1.11, is vulnerable to XSS when pasting malicious code in the link field. Impact An attacker could trick the user to copy&paste a malicious `javascript:` URL as a link that would execute arbitrary JavaScript code within the context of the user's session, potentially leading to unauthorized actions being performed or sensitive information being disclosed. See https://gist.github.com/th4s1s/3921fd9c3e324ad9a3e0d846166e3eb8 Patches Update Recommendation: Users should upgrade to Trix editor version 2.1.12 or later. Workarounds This is not really a workaround but something that should be considered in addition to upgrading to the patched version. If affected users can disallow browsers that don't support a Content Security Policy, then this would be an effective workaround for this and all XSS vulnerabilities. Set CSP policies such as script-src 'self' to ensure that only scripts hosted on the same origin are executed, and explicitly prohibit inline scripts using script-src-elem. References https://gist.github.com/th4s1s/3921fd9c3e324ad9a3e0d846166e3eb8 Credits This vulnerability was reported by Hackerone researcher https://hackerone.com/lio346?type=user