Vulnerability · Published Jul 8, 2026 · Assigned by GitHub_M
CVE-2026-58501Zeep SSRF because Settings.forbid_external is not enforced
Medium 5.9
In plain English
A medium-severity server-side request forgery in python-zeep from mvantellingen. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | python-zeep | no fix listed | DEBIAN-CVE-2026-58501 |
| Debian:13 | python-zeep | no fix listed | DEBIAN-CVE-2026-58501 |
| Debian:14 | python-zeep | 4.3.3-1 | DEBIAN-CVE-2026-58501 |
| PyPI | zeep | 4.3.3 | GHSA-4cc2-g9w2-fhf6 |
| PyPI | zeep | 4.3.3 | PYSEC-2026-2323 |
| Ubuntu:22.04:LTS | python-zeep | no fix listed | UBUNTU-CVE-2026-58501 |
| Ubuntu:24.04:LTS | python-zeep | no fix listed | UBUNTU-CVE-2026-58501 |
| Ubuntu:25.10 | python-zeep | no fix listed | UBUNTU-CVE-2026-58501 |
| Ubuntu:26.04:LTS | python-zeep | no fix listed | UBUNTU-CVE-2026-58501 |
| Ubuntu:26.10 | python-zeep | no fix listed | UBUNTU-CVE-2026-58501 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| mvantellingen | python-zeep | >= 4.0.0, < 4.3.3 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N