CVE-2026-34736 MEDIUM

CVE-2026-34736: Open edX Platform: Account Activation Bypass via activation_key Exposure in REST API

Vendor Openedx
Product openedx-platform
Weakness CWE-287 · Improper authentication
Published April 2, 2026
Last update April 3, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Open edX Platform enables the authoring and delivery of online learning at any scale. From the maple release to before the ulmo release, an unauthenticated attacker can fully bypass the email verification process by combining two issues: the OAuth2 password grant issuing tokens to inactive users (documented behavior) and the activation_key being exposed in the REST API response at /api/user/v1/accounts/. This issue has been patched in the ulmo release.

Key dates

02Disclosure timeline

April 2, 2026 CVE published
April 3, 2026 Record updated