CVE-2026-58501 PUBLISHED

Zeep SSRF because Settings.forbid_external is not enforced

Assigner: GitHub_M
Reserved: 30.06.2026 Published: 08.07.2026 Updated: 09.07.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS Score: 5.9

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	mvantellingen
Product	python-zeep
Versions	Version >= 4.0.0, < 4.3.3 is affected

References

https://github.com/mvantellingen/python-zeep/security/advisories/GHSA-4cc2-g9w2-fhf6
https://github.com/mvantellingen/python-zeep/commit/83eb07bc6c84d841329d4f88856fecdba86f753e
https://github.com/mvantellingen/python-zeep/releases/tag/4.3.3

Problem Types

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