CVE-2026-42858

CRITICAL EPSS 29.2%
Published May 11, 20261mo ago · Modified Jun 17, 20262w ago
9.9 CVSS 3.1
Critical
Find Similar
Published May 11, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

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 Details

Base Score
9.9
Exploitability
3.1
Impact
6.0
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
29.2% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-918 Server-Side Request Forgery (SSRF) Validation

Affected Products 1

VendorProductVersionRange
openedxopenedx* <2026-04-24

References 3

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

Remediation

  • github.com https://github.com/openedx/openedx-platform/commit/6fda1f120ff5a590d120ae1180185525f399c6d0
    Patch
  • github.com https://github.com/openedx/openedx-platform/commit/70a56246dd9c9df57c596e64bdd8a11b1d9da054
    Patch