Vulnerability-Lookup

GHSA-JWFJ-6Q57-4CP3

Vulnerability from github – Published: 2026-09-04 15:36 – Updated: 2026-09-04 15:36

Details

Onyx 4.6.6 fails to properly restrict access to custom tool credentials stored in custom_headers, allowing any authenticated user to read admin-defined API keys. Attackers with basic authentication can call GET /tool/{tool_id} or GET /tool endpoints to retrieve plaintext authorization headers and third-party API credentials, then use them to directly access upstream APIs.

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

7.1 (High)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-85700"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-522"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-04T15:17:49Z",
    "severity": "HIGH"
  },
  "details": "Onyx 4.6.6 fails to properly restrict access to custom tool credentials stored in custom_headers, allowing any authenticated user to read admin-defined API keys. Attackers with basic authentication can call GET /tool/{tool_id} or GET /tool endpoints to retrieve plaintext authorization headers and third-party API credentials, then use them to directly access upstream APIs.",
  "id": "GHSA-jwfj-6q57-4cp3",
  "modified": "2026-09-04T15:36:17Z",
  "published": "2026-09-04T15:36:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85700"
    },
    {
      "type": "WEB",
      "url": "https://github.com/onyx-dot-app/onyx/issues/13165"
    },
    {
      "type": "WEB",
      "url": "https://github.com/onyx-dot-app/onyx"
    },
    {
      "type": "WEB",
      "url": "https://github.com/onyx-dot-app/onyx/blob/v4.6.6/backend/onyx/server/features/tool/api.py"
    },
    {
      "type": "WEB",
      "url": "https://github.com/onyx-dot-app/onyx/blob/v4.6.6/backend/onyx/server/features/tool/models.py"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/onyx-4.6.6-custom-tool-secret-header-disclosure-via-tool-endpoints"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-85700 (GCVE-0-2026-85700)

Vulnerability from cvelistv5 – Published: 2026-09-04 14:32 – Updated: 2026-09-04 14:55

Title

Onyx 4.6.6 Custom Tool Secret Header Disclosure via Tool Endpoints

Summary

Severity

7.1 (High)


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

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-04 14:53 UTC

CWE

CWE-522 - Insufficiently Protected Credentials

Assigner

VulnCheck mitre root

References

5 references

URL	Tags
https://github.com/onyx-dot-app/onyx/issues/13165	issue-tracking
https://github.com/onyx-dot-app/onyx	product
https://github.com/onyx-dot-app/onyx/blob/v4.6.6/…	technical-description
https://github.com/onyx-dot-app/onyx/blob/v4.6.6/…	technical-description
https://www.vulncheck.com/advisories/onyx-4.6.6-c…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
onyx-dot-app	onyx	Affected: 0 , ≤ 4.6.6 (semver) cpe:2.3:a:onyx:onyx::::::::

Date Public

2026-07-19 00:00

Credits

George Chen

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-85700",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-04T14:53:05.820690Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-04T14:55:15.464Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "onyx",
          "vendor": "onyx-dot-app",
          "versions": [
            {
              "lessThanOrEqual": "4.6.6",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
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      "cpeApplicability": [
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                {
                  "criteria": "cpe:2.3:a:onyx:onyx:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "0.1.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "George Chen"
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      "datePublic": "2026-07-19T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "metrics": [
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            "attackComplexity": "LOW",
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            "privilegesRequired": "LOW",
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            "subConfidentialityImpact": "NONE",
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            "vulnIntegrityImpact": "NONE"
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          "tags": [
            "third-party-advisory"
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    "dateReserved": "2026-09-04T13:51:53.585Z",
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    "state": "PUBLISHED"
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}

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.

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.

Action not permitted

GHSA-JWFJ-6Q57-4CP3

CVE-2026-85700 (GCVE-0-2026-85700)

Tags

Sightings

Nomenclature