SSRF in Mvantellingen Python-Zeep
CVE-2026-58501
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.003 (19.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Mvantellingen Python-zeep — versions >= 4.0.0, < 4.3.3
- Mvantellingen Zeep
- Python-zeep Zeep
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Mitigation, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-58501?
- CVE-2026-58501 is a medium-severity vulnerability in Mvantellingen Python-Zeep, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.9/10. Published 2026-07-08.
- How severe is CVE-2026-58501?
- Medium severity. CVSS v3 base score is 5.9 out of 10.