Security fixes are provided for the latest release on the main branch and the most recent tagged release on Hex.
Do not open public GitHub issues for security vulnerabilities.
Report security issues privately to the maintainers. See CONTRIBUTING.md for contact details.
Include a description of the issue, steps to reproduce, and impact if known. We will acknowledge receipt and work on a fix or mitigation as appropriate.
Corex.Url and the shared JS redirect helper strip leading C0 control and space
codepoints (≤ 0x20) before scheme checks, matching WHATWG URL parsing. Without
this, a destination such as <<1, "javascript:…">> could be treated as a relative
path and later execute in the browser (same class as LiveView CVE-2026-58228).
Consumers should also run Phoenix LiveView ≥ 1.2.7 and Phoenix ≥ 1.8.9 for
upstream <.link> / navigation fixes.