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 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.

CVSS v3 4.7 MEDIUM

4.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/openedx/openedx-platform/commit/76462f1e5fa9b37d2621ad7ad19514b403908970	Patch
https://github.com/openedx/openedx-platform/security/advisories/GHSA-2843-x998-f8r2	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:openedx:openedx:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-06 22:16

Updated : 2026-07-24 21:10

NVD link : CVE-2026-35404

Mitre link : CVE-2026-35404

CVE.ORG link : CVE-2026-35404

JSON object : View

Products Affected

openedx

openedx

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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