VulnerabilityPublished 8 Jul 2026

CVE-2026-58501: Python zeep · Zeep is a Python SOAP client

Affects python-zeepSource GCVE Database

Authoritative record:CVE-2026-58501· Medium 5.9

Not known to be exploited · CVSS 5.9 Medium · fixed in 4.3.3 : update python-zeep when convenient.

Data as of 26 Oct 2026, 09:16 UTC

CVSS 3.1 base score

5.9Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 34% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 4.3.3

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

Exploitation evidence

Disclosed: evidence found.
CVE published 8 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Ubuntu:18.04:LTSpython-zeep`pkg:deb/ubuntu/python-zeep?arch=source&distro=bionic`Other threats	Affected =2.1.1-1 =2.4.0-1 =2.5.0-1	Fixed in–
Ubuntu:20.04:LTSpython-zeep`pkg:deb/ubuntu/python-zeep?arch=source&distro=focal`Other threats	Affected =3.2.0-1 =3.4.0-1	Fixed in–
Ubuntu:22.04:LTSpython-zeep`pkg:deb/ubuntu/python-zeep?arch=source&distro=jammy`Other threats	Affected =4.0.0-1 =4.1.0-1	Fixed in–
Ubuntu:24.04:LTSpython-zeep`pkg:deb/ubuntu/python-zeep?arch=source&distro=noble`Other threats	Affected =4.2.1-1 =4.2.1-2 =4.2.1-2ubuntu1	Fixed in–
Ubuntu:25.10python-zeep`pkg:deb/ubuntu/python-zeep?arch=source&distro=questing`Other threats	Affected =4.3.1-2 =4.3.1-2ubuntu1 =4.3.1-3	Fixed in–
Ubuntu:26.04:LTSpython-zeep`pkg:deb/ubuntu/python-zeep?arch=source&distro=resolute`Other threats	Affected =4.3.1-3 =4.3.2-1	Fixed in–
Ubuntu:26.10python-zeep`pkg:deb/ubuntu/python-zeep?arch=source&distro=stonking`Other threats	Affected =4.3.2-1 =4.3.2-2 =4.3.2-3 =4.3.3-2	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade python-zeep to version 4.3.3 or later, where the enforcement of the Settings.forbid_external option is fixed. No other mitigations are indicated or required as the issue is resolved in this official fix.

Description

CVE-2026-58501 is a vulnerability in the python-zeep SOAP client versions from 4.0.0 up to but not including 4.3.3. The flaw allows external resource fetching during WSDL or XSD parsing because the setting intended to forbid external references (Settings.forbid_external) is defined but not enforced. This enables an attacker to cause the client to fetch attacker-controlled HTTP or HTTPS URLs via xsd:import, xsd:include, wsdl:import, and lxml entity or DTD references. The issue is fixed in version 4.3.3.

Impact

The vulnerability allows an attacker to induce the python-zeep client to fetch external resources from attacker-controlled HTTP or HTTPS URLs during WSDL or XSD parsing. This can lead to potential information disclosure, network-based attacks, or other impacts depending on the fetched content and the client environment. No known exploits in the wild have been reported. The severity is assessed as medium based on the described impact.

References

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