CVE-2026-34736: medium-severity vulnerability in openedx-platform
Open edX Platform: Account Activation Bypass via activation_key Exposure in REST API
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.2%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected products
openedx · openedx-platformRelated CVEs — openedx-platform
In the same product, most dangerous first.
CVE-2026-85272MEDIUMOpen edX Platform: Path traversal via prefix-bypass in safe_extractall Path ValidationEPSS 0.5%CVE-2026-55421MEDIUMOpen edX Platform: SSRF in Studio Video Download EndpointEPSS 0.5%CVE-2026-53635HIGHOpen edX Platform: Insufficient Permission on set_course_mode_price()EPSS 0.4%CVE-2026-42858HIGHOpen edX Platform: Server-Side Request Forgery (SSRF) in SAML Provider Data Sync EndpointEPSS 0.4%CVE-2026-85271MEDIUMOpen edX Platform: Stored CSS Injection in Email Digest Notifications via Unsanitized Thread Title (incomplete patch of CVE-2026-42857)EPSS 0.4%CVE-2026-53636MEDIUMOpen edX LTI OAuth Replay AttackEPSS 0.3%