Skip to content
Heist/ feed
Back to feed
High

Romeo's invalid NetworkPolicy enables a malicious actor to pivot into another namespace

Type: advisorySources: OSV

Romeo gives the capability to reach high code coverage of Go ≥1.20 apps by helping to measure code coverage for functional and integration tests within GitHub Actions. Prior to version 0.2.1, 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. Removing the `inter-ns` NetworkPolicy patches the vulnerability in version 0.2.1. If updates are not possible in production environments, manually delete `inter-ns` and update as soon as possible. Given one's context, delete the failing network policy that should be prefixed by `inter-ns-` in the target namespace.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-32737
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 08:36 UTC · Revision 1

Source evidence

Romeo's invalid NetworkPolicy enables a malicious actor to pivot into another namespace

core-osv · Original source

Published 18 Mar 2026, 22:23 UTC

Romeo gives the capability to reach high code coverage of Go ≥1.20 apps by helping to measure code coverage for functional and integration tests within GitHub Actions. Prior to version 0.2.1, 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. Removing the `inter-ns` NetworkPolicy patches the vulnerability in version 0.2.1. If updates are not possible in production environments, manually delete `inter-ns` and update as soon as possible. Given one's context, delete the failing network policy that should be prefixed by `inter-ns-` in the target namespace.

osv:CVE-2026-32737
Complete source record
{
  "id": "9fb53858e72f511daa98197bb747ca9379157d5d6c8110952c2a7dacd86b2d35",
  "url": "https://osv.dev/vulnerability/CVE-2026-32737",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Romeo's invalid NetworkPolicy enables a malicious actor to pivot into another namespace",
    "summary": "Romeo gives the capability to reach high code coverage of Go ≥1.20 apps by helping to measure code coverage for functional and integration tests within GitHub Actions. Prior to version 0.2.1, 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. Removing the `inter-ns` NetworkPolicy patches the vulnerability in version 0.2.1. If updates are not possible in production environments, manually delete `inter-ns` and update as soon as possible. Given one's context, delete the failing network policy that should be prefixed by `inter-ns-` in the target namespace.",
    "evidence": "osv:CVE-2026-32737",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-32737",
      "aliases": [
        "CVE-2026-32737",
        "GHSA-fgm3-q9r5-43v9",
        "GO-2026-4714"
      ],
      "metrics": [
        {
          "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": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ctfer-io/romeo",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3bb5e9d9ce1199dfbb90fef8ad79ebdeb0bc5e78"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.2.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "3bb5e9d9ce1199dfbb90fef8ad79ebdeb0bc5e78"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "cpe": "cpe:2.3:a:ctfer-io:romeo:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.2.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "webserver/v0.2.0",
            "v0.2.0",
            "install/v0.2.0",
            "environment/v0.2.0",
            "webserver/v0.1.9",
            "v0.1.9",
            "install/v0.1.9",
            "environment/v0.1.9",
            "webserver/v0.1.8",
            "v0.1.8",
            "install/v0.1.8",
            "environment/v0.1.8",
            "webserver/v0.1.7",
            "v0.1.7",
            "install/v0.1.7",
            "environment/v0.1.7",
            "webserver/v0.1.6",
            "v0.1.6",
            "install/v0.1.6",
            "environment/v0.1.6",
            "webserver/v0.1.5",
            "v0.1.5",
            "install/v0.1.5",
            "environment/v0.1.5",
            "webserver/v0.1.4",
            "v0.1.4",
            "install/v0.1.4",
            "environment/v0.1.4",
            "webserver/v0.1.3",
            "v0.1.3",
            "install/v0.1.3",
            "environment/v0.1.3",
            "webserver/v0.1.2",
            "v0.1.2",
            "install/v0.1.2",
            "environment/v0.1.2",
            "webserver/v0.1.1",
            "v0.1.1",
            "install/v0.1.1",
            "environment/v0.1.1",
            "webserver/v0.1.0",
            "v0.1.0",
            "install/v0.1.0",
            "environment/v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32737.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.489364477Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32737.json",
        "https://github.com/ctfer-io/romeo/security/advisories/GHSA-fgm3-q9r5-43v9",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-32737",
        "https://github.com/ctfer-io/romeo/commit/3bb5e9d9ce1199dfbb90fef8ad79ebdeb0bc5e78"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-284"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32737.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-32737",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493842,
  "published_at": "2026-03-18T22:23:09.952+00:00"
}