CVE-2026-34736
Open edX Platform: Account Activation Bypass via activation_key Exposure in REST API
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
15th
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.
| CWE | CWE-287 |
| Vendor | openedx |
| Product | openedx-platform |
| Published | Apr 2, 2026 |
| Last Updated | Apr 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
openedx / openedx-platform
>= maple, < ulmo