Vulnerability-Lookup

GHSA-FGM3-Q9R5-43V9

Vulnerability from github – Published: 2026-03-16 20:45 – Updated: 2026-03-19 21:15

Summary

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

Details

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.

Severity

7.9 (High)


                  
                    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

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/ctfer-io/romeo/environment/deploy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-32737"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-16T20:45:59Z",
    "nvd_published_at": "2026-03-18T23:17:30Z",
    "severity": "HIGH"
  },
  "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.",
  "id": "GHSA-fgm3-q9r5-43v9",
  "modified": "2026-03-19T21:15:32Z",
  "published": "2026-03-16T20:45:59Z",
  "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Romeo\u0027s invalid NetworkPolicy enables a malicious actor to pivot into another namespace "
}

CVE-2026-32737 (GCVE-0-2026-32737)

Vulnerability from cvelistv5 – Published: 2026-03-18 22:23 – Updated: 2026-03-20 18:11

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.

Severity

7.9 (High)


                        
                          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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-20 17:09 UTC

CWE

CWE-284 - Improper Access Control

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7634 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/ctfer-io/romeo/security/adviso…	x_refsource_CONFIRM
https://github.com/ctfer-io/romeo/commit/3bb5e9d9…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
ctfer-io	romeo	Affected: < 0.2.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-32737",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-20T17:09:36.554290Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-20T18:11:32.934Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "romeo",
          "vendor": "ctfer-io",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.2.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Romeo gives the capability to reach high code coverage of Go \u22651.20 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\u0027s context, delete the failing network policy that should be prefixed by `inter-ns-` in the target namespace."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.9,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "CWE-284: Improper Access Control",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-18T22:23:09.952Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/ctfer-io/romeo/security/advisories/GHSA-fgm3-q9r5-43v9",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/ctfer-io/romeo/security/advisories/GHSA-fgm3-q9r5-43v9"
        },
        {
          "name": "https://github.com/ctfer-io/romeo/commit/3bb5e9d9ce1199dfbb90fef8ad79ebdeb0bc5e78",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ctfer-io/romeo/commit/3bb5e9d9ce1199dfbb90fef8ad79ebdeb0bc5e78"
        }
      ],
      "source": {
        "advisory": "GHSA-fgm3-q9r5-43v9",
        "discovery": "UNKNOWN"
      },
      "title": "Romeo\u0027s invalid NetworkPolicy enables a malicious actor to pivot into another namespace"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-32737",
    "datePublished": "2026-03-18T22:23:09.952Z",
    "dateReserved": "2026-03-13T15:02:00.627Z",
    "dateUpdated": "2026-03-20T18:11:32.934Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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