CVE-2026-42860Public exploitNetwork attack vector

Internal resource access via unvalidated SAML metadata URL

Published May 11, 2026 · Updated May 11, 2026

SSRF in Open edX Enterprise Service 7.0.2 through 7.0.4 allows remote authenticated users to access internal resources via SAML metadata URLs. SAMLProviderDataViewSet sends SAMLProviderConfig.metadata_source directly to requests.get() without scheme enforcement, address filtering, or a timeout. Enterprise Admin access and a configured SAML identity provider are required; successful requests expose cloud metadata and internal services through the server.

CVSS severity8.5
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Open edX Enterprise Service 7.0.2 through 7.0.4 allows remote authenticated users to access internal resources via SAML metadata URLs. SAMLProviderDataViewSet sends SAMLProviderConfig.metadata_source directly to requests.get() without scheme enforcement, address filtering, or a timeout. Enterprise Admin access and a configured SAML identity provider are required; successful requests expose cloud metadata and internal services through the server.

The record

CVE
CVE-2026-42860
Published
May 11, 2026
Updated
May 11, 2026
Vendor
Open edX
Product
Open edX Enterprise Service
Classifications
CWE-918, T1552.005
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 11, 2026CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 7.0.2, < 7.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Open edX · Open edX Enterprise Serviceversion=>= 7.0.2, < 7.0.5

Published CVSS scores

8.5GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1552.005Unsecured Credentials: Cloud Instance Metadata API

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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