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.

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History

Thu, 02 Apr 2026 20:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Open edX Platform: Account Activation Bypass via activation_key Exposure in REST API
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-02T18:29:01.740Z

Reserved: 2026-03-30T18:41:20.754Z

Link: CVE-2026-34736

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-02T19:21:32.867

Modified: 2026-04-02T19:21:32.867

Link: CVE-2026-34736

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses