CVE-2026-35404: Open edX Platform enables the authoring and delivery of online learning at any scale. The view_survey endpoint accepts a redirect_url GET parameter that is…

PriorityP430medium6.1CVSS 3.1

AVNACLPRNUIRSCCLILAN

EPSS

0.22%

12.8th percentile

Open edX Platform enables the authoring and delivery of online learning at any scale. The 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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
openedx	openedx	<= 2026-04-02	—
openedx	openedx-platform	< 76462f1e5fa9b37d2621ad7ad19514b403908970	76462f1e5fa9b37d2621ad7ad19514b403908970

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