CVE-2026-58501 json
Zeep SSRF because Settings.forbid_external is not enforced
published 2026-06-19 4 mo ago modified 2026-10-25 14 d ago also GHSA-4cc2-g9w2-fhf6 , PYSEC-2026-2323 , EUVD-2026-42353
- cvss
- 5.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 35%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi zeep 4.3.3
- python-zeep zeep 4.3.3
- python-zeep Debian 14 4.3.3-1
debian advisories DEBIAN-CVE-2026-58501
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| OSV | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | zeep | >=4.0.0, <4.3.3 |
4.3.3 |
Affected products
- mvantellingen python-zeep
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/mvantellingen/python-zeep/commit/83eb07bc6c84d841329d4f88856fecdba86f753e
web, patch
-
github.com
/mvantellingen/python-zeep/security/advisories/GHSA-4cc2-g9w2-fhf6
web, mitigation, patch, vendor-advisory
-
github.com
/mvantellingen/python-zeep/releases/tag/4.3.3
web, release-notes, advisory
-
github.com
/mvantellingen/python-zeep
package
Sources
- CVE List CVE-2026-58501
- GitHub Advisory GHSA-4cc2-g9w2-fhf6
- NVD CVE-2026-58501
- OSV PYSEC-2026-2323
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.