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CVE-2026-42858— Open edX Platform: Server-Side Request Forgery (SSRF) in SAML Provider Data Sync Endpoint

Quick assessment

Affected
openedx openedx-platform
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Open edX Platform是Open edX开源的一套开源的课程管理系统（CMS）。该系统可用于MOOCs（大规模网络开放课程）以及较小的课程和培训模块。 Open edX Platform存在代码问题漏洞，该漏洞源于SAMLProviderDataViewSet中sync_provider_data端点允许认证的企业管理员用户通过metadata_url参数提供任意URL，且未进行URL验证、IP过滤或方案强制，可能导致服务器向内部网络服务或云元数据端点发起HTTP请求。

CVSS 8.5 · High EPSS 0.45% · P37

Affected Version Matrix 1

VendorProduct Version RangeStatus
openedx openedx-platform < 6fda1f120ff5a590d120ae1180185525f399c6d0 affected
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I. Basic Information for CVE-2026-42858

Vulnerability Information
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Vulnerability Title
Open edX Platform: Server-Side Request Forgery (SSRF) in SAML Provider Data Sync Endpoint
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Open edX Platform 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open edX Platform是Open edX开源的一套开源的课程管理系统（CMS）。该系统可用于MOOCs（大规模网络开放课程）以及较小的课程和培训模块。 Open edX Platform存在代码问题漏洞，该漏洞源于SAMLProviderDataViewSet中sync_provider_data端点允许认证的企业管理员用户通过metadata_url参数提供任意URL，且未进行URL验证、IP过滤或方案强制，可能导致服务器向内部网络服务或云元数据端点发起HTTP请求。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
openedx openedx-platform < 6fda1f120ff5a590d120ae1180185525f399c6d0 -

II. Public POCs for CVE-2026-42858

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III. Intelligence Information for CVE-2026-42858

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Patches & Fixes for CVE-2026-42858 (2)

Vendor Advisories for CVE-2026-42858 (1)

Same Patch Batch · openedx · 2026-05-11 · 3 CVEs total

CVE-2026-42860 8.5 HIGH Open edx Enterprise Service: SSRF via SAML metadata URL in sync_provider_data endpoint
CVE-2026-42857 4.6 MEDIUM Open edX Platform: Stored CSS Injection in Email Notifications via Incomplete HTML Sanitiz

IV. Related Vulnerabilities

Same product: openedx-platform
Same vendor: openedx
Same weakness: CWE-918

V. Comments for CVE-2026-42858

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