CVE-2026-42858

HIGH 8.5

Open edX Platform: Server-Side Request Forgery (SSRF) in SAML Provider Data Sync Endpoint

CVSS Score

8.5

EPSS Score

0.0%

EPSS Percentile

8th

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.

CWE	CWE-918
Vendor	openedx
Product	openedx-platform
Published	May 11, 2026
Last Updated	May 12, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

Affected Versions

openedx / openedx-platform

< 6fda1f120ff5a590d120ae1180185525f399c6d0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/openedx/openedx-platform/security/advisories/GHSA-328g-7h4g-r2m9 github.com: https://github.com/openedx/openedx-platform/commit/6fda1f120ff5a590d120ae1180185525f399c6d0 github.com: https://github.com/openedx/openedx-platform/commit/70a56246dd9c9df57c596e64bdd8a11b1d9da054