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Security

Reporting

Report a vulnerability through GitHub's private advisory form rather than a public issue. You should get an acknowledgement within a few days.

Supported versions

The latest major receives fixes. Earlier majors do not.

Scope

RetroCSS is a CSS framework with an optional JavaScript bundle. It has no runtime dependencies, makes no network requests, and reads no storage beyond one localStorage key (retro-theme, guarded so blocked storage cannot throw). That keeps the surface small, but two things are worth knowing:

  • RetroCSS.toast.show() escapes its message by default. Passing { html: true }, or putting data-retro-toast-html on a trigger, assigns the string with innerHTML and does not sanitise it. Never pass user input through that path. This is covered by a unit test.
  • Tooltip and toast content comes from data attributes. If those attributes are rendered from untrusted input by your own templating, escape it there, as you would for any attribute.

Findings in development dependencies that cannot affect a consumer of the published package are still welcome, but will be treated as maintenance rather than as advisories.