CVE-2026-57307: Jenkins Zowe zDevOps Plugin missing permission check in connection endpoint

CVE-2026-57307 · Severity: medium · CVSS 4.2 · Published 2026-06-24

The Jenkins Zowe zDevOps plugin, which integrates Jenkins with Zowe mainframe services, contains a security flaw where it fails to verify user permissions for certain actions. This allows an authorized Jenkins user to trick the system into connecting to a malicious server using existing credentials stored in Jenkins. An attacker could use this to steal sensitive login information or service credentials, potentially compromising connected mainframe systems.

Vendors: Jenkins Project, Maven.

Quick answers

Is CVE-2026-57307 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-57307 being exploited in the wild.
How severe is CVE-2026-57307?
Medium severity, with a CVSS score of 4.2, published 24 June 2026.
Which products and versions are affected?
Jenkins Project Zowe zDevOps Plugin 1.1.3.50.ve350c9b_450b_1 and earlier; io.jenkins.plugins:zdevops (Maven) <= 1.1.3.50.ve350c9b, ECOSYSTEM:introduced=0,last_affected=1.1.3.50.ve350c9b.
Is there a fix for CVE-2026-57307?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-57307 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-57307?
Check whether you run Jenkins Project Zowe zDevOps Plugin or io.jenkins.plugins:zdevops (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A missing permission check in Jenkins Zowe zDevOps Plugin version 1.1.3.50.ve350c9b_450b_1 and earlier allows attackers with Overall/Read permission to trigger an outbound connection to an arbitrary URL. By specifying a malicious endpoint and a known credential ID (obtained through other means), the attacker can cause the plugin to transmit Jenkins-stored credentials to the external server. This is a classic credential capture vulnerability resulting from improper authorization on a diagnostic or connection-testing endpoint. As of the advisory date, users should check for updates to the Zowe zDevOps Plugin.

Affected products

  • Jenkins Project Zowe zDevOps Plugin 1.1.3.50.ve350c9b_450b_1 and earlier

Identifiers

  • CVE-2026-57307
  • GHSA-xx59-jv36-5r44

Timeline

  • 2026-06-24: disclosed
  • 2026-06-24: advisory

References

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