CVE-2026-58501: CWE-918: Server-Side Request Forgery (SSRF) in mvantellingen python-zeep
Zeep is a Python SOAP client. From 4.0.0 before 4.3.3, Settings.forbid_external is defined but not enforced when parsing WSDL or XSD documents, allowing transitive xsd:import, xsd:include, wsdl:import, and lxml entity or DTD references to fetch attacker-chosen HTTP or HTTPS URLs. This issue is fixed in version 4.3.3.
AI Analysis
Technical Summary
The python-zeep SOAP client library versions >=4.0.0 and <4.3.3 contain a SSRF vulnerability (CWE-918) because the Settings.forbid_external flag is not enforced during parsing of WSDL or XSD documents. This allows attackers to cause the client to fetch arbitrary HTTP or HTTPS URLs through transitive xsd:import, xsd:include, wsdl:import, or lxml entity/DTD references. The vulnerability is resolved in version 4.3.3.
Potential Impact
An attacker can exploit this vulnerability to make the python-zeep client fetch arbitrary external URLs, potentially leading to information disclosure or interaction with internal network resources. The CVSS score is 5.9 (medium severity) with high confidentiality impact but no integrity or availability impact.
Mitigation Recommendations
Upgrade python-zeep to version 4.3.3 or later, where this SSRF vulnerability is fixed. Patch status is confirmed by the version fix information. No other mitigations are indicated.
CVE-2026-58501: CWE-918: Server-Side Request Forgery (SSRF) in mvantellingen python-zeep
Description
Zeep is a Python SOAP client. From 4.0.0 before 4.3.3, Settings.forbid_external is defined but not enforced when parsing WSDL or XSD documents, allowing transitive xsd:import, xsd:include, wsdl:import, and lxml entity or DTD references to fetch attacker-chosen HTTP or HTTPS URLs. This issue is fixed in version 4.3.3.
CVSS v3.1
Score 5.9medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The python-zeep SOAP client library versions >=4.0.0 and <4.3.3 contain a SSRF vulnerability (CWE-918) because the Settings.forbid_external flag is not enforced during parsing of WSDL or XSD documents. This allows attackers to cause the client to fetch arbitrary HTTP or HTTPS URLs through transitive xsd:import, xsd:include, wsdl:import, or lxml entity/DTD references. The vulnerability is resolved in version 4.3.3.
Potential Impact
An attacker can exploit this vulnerability to make the python-zeep client fetch arbitrary external URLs, potentially leading to information disclosure or interaction with internal network resources. The CVSS score is 5.9 (medium severity) with high confidentiality impact but no integrity or availability impact.
Mitigation Recommendations
Upgrade python-zeep to version 4.3.3 or later, where this SSRF vulnerability is fixed. Patch status is confirmed by the version fix information. No other mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-30T20:21:25.813Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4f575468715ace43edbfbc
Added to database: 07/09/2026, 08:09:56 UTC
Last enriched: 07/10/2026, 08:07:41 UTC
Last updated: 08/22/2026, 22:52:15 UTC
Views: 67
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