Is CVE-2026-35404 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-35404 being exploited in the wild.

How severe is CVE-2026-35404?

Medium severity, with a CVSS score of 4.7, published 6 April 2026.

Which products and versions are affected?

Open edX Platform <= master (all versions containing the survey app), All versions containing the survey app up to 2026-04-02.

Is there a fix for CVE-2026-35404?

A patch was published on 2026-04-02: Fix committed to master branch Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-35404 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-35404?

Check whether you run Open edX Platform or Openedx at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-35404: Open edX Platform open redirect in survey views

Q: Which products and versions are affected?

Open edX Platform <= master (all versions containing the survey app), All versions containing the survey app up to 2026-04-02.

Q: Is there a fix for CVE-2026-35404?

A patch was published on 2026-04-02: Fix committed to master branch Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-35404 attacked?

It is attacked over the network, in a network appliance.

Q: Am I affected by CVE-2026-35404?

Check whether you run Open edX Platform or Openedx at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-35404 · Severity: medium · CVSS 4.7 · Published 2026-04-06

The Open edX Platform, a popular online learning system, contains a security flaw in its survey component. An attacker can create a specially crafted link that appears to be a legitimate part of the educational site but instead redirects logged-in students or staff to a malicious external website. This can be used in phishing campaigns to trick users into providing their login credentials or other sensitive information on a fake site that looks like the real platform.

Technologies: Open edX Platform. Vendors: Open edX.

Quick answers

Is CVE-2026-35404 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-35404 being exploited in the wild.
How severe is CVE-2026-35404?: Medium severity, with a CVSS score of 4.7, published 6 April 2026.
Which products and versions are affected?: Open edX Platform <= master (all versions containing the survey app), All versions containing the survey app up to 2026-04-02.
Is there a fix for CVE-2026-35404?: A patch was published on 2026-04-02: Fix committed to master branch Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-35404 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-35404?: Check whether you run Open edX Platform or Openedx at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An open redirect vulnerability exists in the Open edX Platform's survey application. The 'view_survey' endpoint in 'lms/djangoapps/survey/views.py' accepts a 'redirect_url' GET parameter and passes it directly to 'HttpResponseRedirect()' without validation when a non-existent survey name is requested. Additionally, for valid surveys, the same unvalidated URL is stored in a hidden form field and subsequently used by client-side JavaScript ('location.href') after form submission. An attacker can exploit this by distributing a crafted URL to authenticated users. The vulnerability is fixed by ignoring user-supplied redirect URLs in the survey views and defaulting redirects to the user dashboard.

Affected products

openedx Open edX Platform <= master (all versions containing the survey app)

Timeline

2026-04-02: advisory: Original GHSA advisory published
2026-04-06: disclosed: CVE-2026-35404 published
2026-04-02: patched: Fix committed to master branch

References

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