CVE-2026-32737: Github.com/ctfer io/romeo/environment/deploy Romeo's Invalid NetworkPolicy Enables A Vulnerability

HIGH
Advisory Identifier: GHSA-fgm3-q9r5-43v9
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CWE-284
Published
Advisory Summary

CVE-2026-32737 is a HIGH romeo's invalid networkpolicy enables a vulnerability (CWE-284: Improper Access Control) affecting Github.com/ctfer io/romeo/environment/deploy libraries in the Go ecosystem. The issue involves romeo's invalid networkpolicy enables a malicious actor to pivot into another namespace. Remediation is available by upgrading affected packages to version 0.2.1.

CVE-2026-32737 at a Glance

CVE Identifier CVE-2026-32737
GHSA Identifier GHSA-fgm3-q9r5-43v9
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-284: Improper Access Control
Affected Product Github.com/ctfer io/romeo/environment/deploy
Package Ecosystem Go
Published Date
Last Updated

How to Fix CVE-2026-32737

To remediate this vulnerability, upgrade all affected Github.com/ctfer io/romeo/environment/deploy dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/ctfer-io/romeo/environment/deploy fixed: 0.2.1 
Upgrade github.com/ctfer-io/romeo/environment/deploy to 0.2.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/ctfer-io/romeo/environment/deploy

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-32737, inspect your project dependencies for Github.com/ctfer io/romeo/environment/deploy:

inspect dependencies for github.com/ctfer-io/romeo/environment/deploy

Analyze the terminal output to locate any version of Github.com/ctfer io/romeo/environment/deploy in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.2.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Github.com/ctfer io/romeo/environment/deploy, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact Due to a mis-written NetworkPolicy, a malicious actor can pivot from the "hardened" namespace to any Pod out of it. This breaks the security-by-default property expected as part of the deployment program, leading to a potential lateral movement. ### Patch Removing the `inter-ns` NetworkPolicy patches the vulnerability. If updates are not possible in production environments, we recommend to manually delete it and update as soon as possible. ### Workaround Given your context, delete the failing network policy that should be prefixed by `inter-ns-` in the target namespace.

CVE-2026-32737 Affected Github.com/ctfer io/romeo/environment/deploy Versions

1 component(s)
Fixed Versions:
0.2.1
Product / Package Ecosystem Affected Versions Fixed Version
github.com/ctfer-io/romeo/environment/deploy
golang/github.com/ctfer-io/romeo/environment/deploy
Go
< 0.2.1
0.2.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/ctfer-io/romeo/security/advisories/GHSA-fgm3-q9r5-43v9
NVD — CVE-2026-32737 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-32737
Security Fix Commit FIX COMMIT
https://github.com/ctfer-io/romeo/commit/3bb5e9d9ce1199dfbb90fef8ad79ebdeb0bc5e78
Github.com/ctfer io/romeo/environment/deploy Source Repository REPOSITORY
https://github.com/ctfer-io/romeo

Frequently Asked Questions

What is CVE-2026-32737?
CVE-2026-32737 is a security vulnerability in Github.com/ctfer io/romeo/environment/deploy involving Romeo's invalid NetworkPolicy enables a malicious actor to pivot into another namespace under CWE-284: Improper Access Control.
Which Github.com/ctfer io/romeo/environment/deploy versions are affected?
Affected versions include releases prior to 0.2.1 across affected packages: github.com/ctfer-io/romeo/environment/deploy.
What version fixes CVE-2026-32737?
Upgrading to 0.2.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/ctfer-io/romeo/environment/deploy affected?
Yes, github.com/ctfer-io/romeo/environment/deploy is affected in releases prior to 0.2.1. Upgrade your dependency to 0.2.1 or later.
What CWE is associated with CVE-2026-32737?
CVE-2026-32737 is classified under CWE-284: Improper Access Control (The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.).
How can I check Go dependencies for CVE-2026-32737?
Run the dependency tree command: 'inspect dependencies for github.com/ctfer-io/romeo/environment/deploy'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-fgm3-q9r5-43v9",
  "modified" : "2026-03-19T21:15:32Z",
  "published" : "2026-03-16T20:45:59Z",
  "aliases" : [ "CVE-2026-32737" ],
  "summary" : "Romeo's invalid NetworkPolicy enables a malicious actor to pivot into another namespace ",
  "details" : "### Impact\n\nDue to a mis-written NetworkPolicy, a malicious actor can pivot from the \"hardened\" namespace to any Pod out of it.\nThis breaks the security-by-default property expected as part of the deployment program, leading to a potential lateral movement.\n\n### Patch\n\nRemoving the `inter-ns` NetworkPolicy patches the vulnerability. If updates are not possible in production environments, we recommend to manually delete it and update as soon as possible.\n\n### Workaround\n\nGiven your context, delete the failing network policy that should be prefixed by `inter-ns-` in the target namespace.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/ctfer-io/romeo/environment/deploy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.2.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ctfer-io/romeo/security/advisories/GHSA-fgm3-q9r5-43v9"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-32737"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ctfer-io/romeo/commit/3bb5e9d9ce1199dfbb90fef8ad79ebdeb0bc5e78"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ctfer-io/romeo"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-16T20:45:59Z",
    "nvd_published_at" : "2026-03-18T23:17:30Z"
  }
}