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OpenAdvisories
Medium · 5.1 CVE-2026-61597 EUVD-2026-81300GHSA-4mf4-73j6-mvrwPYSEC-2026-4037

djust is vulnerable to stored/reflected XSS via javascript: URLs in built-in component template tags

Published Sep 16, 2026 · Updated Sep 17, 2026 · Assigned by GitHub_M

Description

djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. Prior to version 1.0.7, many djust built-in component template tags (`djust.components.templatetags.*`) render a developer/user-supplied URL into an `href` / `action` attribute, HTML-escaping it with `conditional_escape` but never validating the URL scheme. HTML escaping prevents attribute breakout but does not neutralize a `javascript:` URI (which needs no escapable characters), so a URL value of `javascript:alert(document.cookie)` lands verbatim in `<a href="javascript:alert(document.cookie)">` and executes in the victim's session on click. Version 1.0.7 contains a fix. As a workaround, do not pass user-controllable URLs to the affected built-in component tags; pre-validate URL schemes in application code before binding them to component arguments.

Affected products

VendorProductAffectedFixed
djust-org djust < 1.0.7 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI djust < 1.0.7 1.0.7 GHSA-4mf4-73j6-mvrw

References