CVE-2026-35404

Open edX Platform enables the authoring and delivery of online learning at any scale. he view_survey endpoint accepts a redirect_url GET parameter that is passed directly to HttpResponseRedirect() without any URL validation. When a non-existent survey name is provided, the server issues an immediate HTTP 302 redirect to the attacker-controlled URL. Additionally, the same unvalidated URL is embedded in a hidden form field and returned in a JSON response after form submission, where client-side JavaScript performs location.href = url. This enables phishing and credential theft attacks against authenticated Open edX users. This vulnerability is fixed with commit 76462f1e5fa9b37d2621ad7ad19514b403908970.

The following products are affected by CVE-2026-35404 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-35404.

URL	Resource
https://github.com/openedx/openedx-platform/commit/76462f1e5fa9b37d2621ad7ad19514b403908970
https://github.com/openedx/openedx-platform/security/advisories/GHSA-2843-x998-f8r2