CVE-2026-58501

Zeep SSRF because Settings.forbid_external is not enforced

State: Published
Severity: 5.9 Medium
Published: Jul 8, 2026
Updated: Jul 9, 2026
Reserved: Jun 30, 2026

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.

Scores

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

Weaknesses

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
python-zeepmvantellingen	>= 4.0.0, < 4.3.3Affected

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

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