CVE-2026-34736
MEDIUMOpen edX Platform: Account Activation Bypass via activation_key Exposure in REST API
Title source: cnaDescription
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.
References (2)
Core 2
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/openedx/openedx-platform/security/advisories/GHSA-m6rg-rp98-4crw
X_Refsource_Misc x_refsource_misc
https://github.com/openedx/openedx-platform/commit/ad342ae16e6af0b46460ca05f47697ac755feba8
Scores
CVSS v3
5.3
EPSS
0.0021
EPSS Percentile
11.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-287
Status
published
Products (1)
openedx/openedx-platform
>= maple, < ulmo
Published
Apr 02, 2026
Tracked Since
Apr 03, 2026