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Low, CVSS 3.3amended

Imperative CLI vulnerable to Command Injection

CVE-2021-4326GHSA-6q8m-42qq-64r7

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (@zowe/imperative 5.7.1, 4.18.10), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
3.3 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
  • CVE-2021-4326: 0.26% estimated exploitation activity in the next 30 days; percentile 17.13 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

A vulnerability in Imperative framework which allows already-privileged local actors to execute arbitrary shell commands via plugin install/update commands, or maliciously formed environment variables. Impacts Zowe CLI.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-6q8m-42qq-64r7

  2. Revision 1 · created ·

    Published from osv record GHSA-6q8m-42qq-64r7

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2021-4326

Advisory: Imperative CLI vulnerable to Command Injection
IDs: CVE-2021-4326, GHSA-6q8m-42qq-64r7
Record: https://patchnext.com/advisories/cve-2021-4326 (revision 2, source checked 26 Oct 2026, 12:21 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 3.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @zowe/imperative 5.7.1, 4.18.10. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @zowe/imperative: affected >= 5.0.0, < 5.7.1; < 4.18.10; fixed in 5.7.1, 4.18.10

## Suggested inspection (read-only)
- `npm ls @zowe/imperative --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on @zowe/imperative.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-6q8m-42qq-64r7 (OSV record GHSA-6q8m-42qq-64r7 lists affected ranges: npm @zowe/imperative >=5.0.0 =0 <4.18.10 (fixed))
- Verified: https://github.com/advisories/GHSA-6q8m-42qq-64r7 (GitHub-reviewed advisory GHSA-6q8m-42qq-64r7 lists affected ranges: npm @zowe/imperative >=5.0.0 =0 <4.18.10)

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