SecuriTricks - CVE-2026-35404

Description

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.

Product(s) Impacted

Vendor	Product	Versions
Edx	Open Edx	*

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	edx	open_edx	/	/	/	/	/	/	/	/

References

https://github.com/openedx/openedx-platform/commit/76462f1e5fa9b37d2621ad7ad19514b403908970

https://github.com/openedx/openedx-platform/security/advisories/GHSA-2843-x998-f8r2

CVSS Score

4.7 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: NONE
Scope: CHANGED
Confidentiality Impact: LOW
Integrity Impact: NONE
Availability Impact: NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

View Vector String

Timeline

Published: April 6, 2026, 10:16 p.m.
Last Modified: April 7, 2026, 1:20 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2026-35404