CVE-2026-42858: high-severity vulnerability in openedx-platform
Open edX Platform: Server-Side Request Forgery (SSRF) in SAML Provider Data Sync Endpoint
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.5epss 0.4%
Open edX Platform enables the authoring and delivery of online learning at any scale. The sync_provider_data endpoint in SAMLProviderDataViewSet allows authenticated Enterprise Admin users to supply an arbitrary URL via the metadata_url POST parameter. This URL is passed directly to requests.get() in fetch_metadata_xml() without any URL validation, IP filtering, or scheme enforcement. An attacker with Enterprise Admin privileges can force the server to make HTTP requests to internal network services, cloud metadata endpoints (e.g., AWS 169.254.169.254), or other attacker-controlled destinations. This vulnerability is fixed by commit 6fda1f120ff5a590d120ae1180185525f399c6d0 and 70a56246dd9c9df57c596e64bdd8a11b1d9da054.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/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-2026-85271MEDIUMOpen 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%CVE-2026-35404MEDIUMOpen edX Platform has an Open Redirect in Survey Views via Unvalidated redirect_url ParameterEPSS 0.2%