Version 2.18.5 (January 2026)

Welcome to the Zowe Version 2.18.5 release!

See Bug fixes for a list of issues addressed in this release.

Download v2.18.5 build: Want to try new features as soon as possible? You can download the v2.18.5 build from Zowe.org.

New features and enhancements

Zowe Version 2.18.5 contains the enhancements that are described in the following topics.

• Implemented the zowe.network.allowedDomains allowlist property for URL domains (v2). This feature validates all service registration metadata against a trusted domain allowlist. Current feature implementation in version 2.18.5 only issues warnings for unlisted domains by default. Full feature implementation is scheduled for subsequent v2.18.x versions to prevent unauthorized services from onboarding. (#4689)

Bug fixes

Zowe Version 2.18.5 contains the bug fixes that are described in the following topics.

Zowe API Mediation Layer

• Restricted caching to items originating exclusively from trusted proxies. (#4706)
• Fixed Server-Sent Events (SSE) data corruption issues. (#4530)
• Resolved an issue preventing all headers from being written in HTTP responses. (#4522)
• Downgraded the domain allowlist enforcement to issue warnings by default in version 2.18.5. (#4733)
• Applied relaxed firewall rules strictly to routed requests (v2). (#4666)
• Standardized the host verification scheme to align with the rest of the Gateway. (#4667)

Zowe CLI

Zowe CLI (Core)

• Updated tar dependency to resolve technical currency. (#2668)

Zowe CLI Imperative Framework

• Removed large dependency pacote for fetching package metadata when installing plug-ins. (#2668)
• Fixed truncation that could occur when the AbstractRestClient request method downloads gzip-encoded data. (#2661)

Zowe Explorer

Zowe Explorer (Core)

• See the Zowe Explorer changelog for updates included in this release.

Zowe Explorer API

• See the Zowe Explorer API changelog for updates included in this release.

Zowe Explorer for IBM z/OS FTP

• See the Zowe® Explorer for IBM® z/OS® FTP changelog for updates included in this release.

Zowe Explorer ESLint Plug-in

• See the Zowe Explorer ESLint Plug-in changelog for updates included in this release.

Vulnerabilities fixed

Zowe discloses fixed vulnerabilities in a timely manner giving you sufficient time to plan your upgrades. Zowe does not disclose the vulnerabilities fixed in the latest release as we respect the need for at least 45 days to decide when and how you upgrade Zowe. When a new release is published, Zowe publishes the vulnerabilities fixed in the previous release. For more information about the Zowe security policy, see the Security page on the Zowe website.

The following security issues were fixed by the Zowe security group in version 2.18.4:

• BDSA-2025-4006
• BDSA-2025-5248
• BDSA-2025-6881
• BDSA-2025-11547
• BDSA-2025-7426
• BDSA-2024-9866
• BDSA-2024-9861
• BDSA-2025-12973
• BDSA-2025-13945
• BDSA-2024-10785
• BDSA-2024-5686
• BDSA-2025-3548
• BDSA-2025-2271