Vulnerability-Lookup

GHSA-5CVP-P7P4-MCX9

Vulnerability from github – Published: 2026-05-18 14:20 – Updated: 2026-05-18 14:20

Summary

Neotoma: Unauthenticated Inspector/API access via reverse-proxy loopback auth bypass

Details

Neotoma versions starting at v0.6.0 can treat public reverse-proxied requests as local when the app receives them over a loopback socket and no Bearer token is present.

In affected deployments, the REST auth middleware can resolve unauthenticated requests as the local development user, making the hosted Inspector and related API surface reachable without credentials.

Impact: unauthorized access to production data exposed through the Inspector/API on affected deployments.

Affected condition: a public deployment behind a reverse proxy or same-host tunnel that forwards traffic to the Node process over loopback.

Remediation implemented on the main branch: local-request detection now fails closed in production unless loopback trust is explicitly enabled, and forwarded public clients remain remote.

Patched release version is pending; this draft will be updated once the fix is released.

Severity

6.9 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "neotoma"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.6.0"
            },
            {
              "fixed": "0.11.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-45577"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-288",
      "CWE-306"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-18T14:20:06Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "Neotoma versions starting at v0.6.0 can treat public reverse-proxied requests as local when the app receives them over a loopback socket and no Bearer token is present.\n\nIn affected deployments, the REST auth middleware can resolve unauthenticated requests as the local development user, making the hosted Inspector and related API surface reachable without credentials.\n\nImpact: unauthorized access to production data exposed through the Inspector/API on affected deployments.\n\nAffected condition: a public deployment behind a reverse proxy or same-host tunnel that forwards traffic to the Node process over loopback.\n\nRemediation implemented on the main branch: local-request detection now fails closed in production unless loopback trust is explicitly enabled, and forwarded public clients remain remote.\n\nPatched release version is pending; this draft will be updated once the fix is released.",
  "id": "GHSA-5cvp-p7p4-mcx9",
  "modified": "2026-05-18T14:20:06Z",
  "published": "2026-05-18T14:20:06Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/markmhendrickson/neotoma/security/advisories/GHSA-5cvp-p7p4-mcx9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/markmhendrickson/neotoma"
    },
    {
      "type": "WEB",
      "url": "https://github.com/markmhendrickson/neotoma/releases/tag/v0.11.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Neotoma: Unauthenticated Inspector/API access via reverse-proxy loopback auth bypass"
}

CVE-2026-45577 (GCVE-0-2026-45577)

Vulnerability from cvelistv5 – Published: 2026-05-29 16:53 – Updated: 2026-05-29 19:28

Title

Neotoma: Unauthenticated Inspector/API access via reverse-proxy loopback auth bypass

Summary

Neotoma provides versioned records that persist across agent runs. From 0.6.0 to before 0.11.1, Neotoma can treat public reverse-proxied requests as local when the app receives them over a loopback socket and no Bearer token is present. In affected deployments, the REST auth middleware can resolve unauthenticated requests as the local development user, making the hosted Inspector and related API surface reachable without credentials. This vulnerability is fixed in 0.11.1.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CWE

CWE-288 - Authentication Bypass Using an Alternate Path or Channel
CWE-306 - Missing Authentication for Critical Function

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/markmhendrickson/neotoma/secur…	x_refsource_CONFIRM
https://github.com/markmhendrickson/neotoma/relea…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
markmhendrickson	neotoma	Affected: >= 0.6.0, < 0.11.1

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-45577",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-29T19:27:40.900086Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-29T19:28:05.378Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "neotoma",
          "vendor": "markmhendrickson",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.6.0, \u003c 0.11.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Neotoma provides versioned records that persist across agent runs. From 0.6.0 to before 0.11.1, Neotoma can treat public reverse-proxied requests as local when the app receives them over a loopback socket and no Bearer token is present. In affected deployments, the REST auth middleware can resolve unauthenticated requests as the local development user, making the hosted Inspector and related API surface reachable without credentials. This vulnerability is fixed in 0.11.1."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-288",
              "description": "CWE-288: Authentication Bypass Using an Alternate Path or Channel",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-306",
              "description": "CWE-306: Missing Authentication for Critical Function",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-29T16:53:32.982Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/markmhendrickson/neotoma/security/advisories/GHSA-5cvp-p7p4-mcx9",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/markmhendrickson/neotoma/security/advisories/GHSA-5cvp-p7p4-mcx9"
        },
        {
          "name": "https://github.com/markmhendrickson/neotoma/releases/tag/v0.11.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/markmhendrickson/neotoma/releases/tag/v0.11.1"
        }
      ],
      "source": {
        "advisory": "GHSA-5cvp-p7p4-mcx9",
        "discovery": "UNKNOWN"
      },
      "title": "Neotoma: Unauthenticated Inspector/API access via reverse-proxy loopback auth bypass"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-45577",
    "datePublished": "2026-05-29T16:53:32.982Z",
    "dateReserved": "2026-05-12T19:00:14.600Z",
    "dateUpdated": "2026-05-29T19:28:05.378Z",
    "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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-5CVP-P7P4-MCX9

CVE-2026-45577 (GCVE-0-2026-45577)

Tags

Sightings

Nomenclature