Vulnerability-Lookup

CVE-2026-85667 (GCVE-0-2026-85667)

Vulnerability from cvelistv5 – Published: 2026-09-04 14:32 – Updated: 2026-09-08 17:04

Title

xiaobei through 5.5.2 Unauthenticated Webhook Message Injection

Summary

xiaobei through 5.5.2 fails to implement authentication or signature validation on webhook endpoints, allowing unauthenticated attackers to inject arbitrary messages into the agent pipeline. Attackers can publish malicious messages via the /webhook_worktool handler and exploit unvalidated media URL fetching to perform server-side request forgery against internal services.

Severity

9.3 (Critical)


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

9.1 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 17:04 UTC

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://github.com/TeamWiseFlow/xiaobei/issues/440	issue-tracking
https://github.com/TeamWiseFlow/xiaobei	product
https://github.com/TeamWiseFlow/xiaobei/blob/v5.5…	technical-description
https://www.vulncheck.com/advisories/xiaobei-thro…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
TeamWiseFlow	xiaobei	Affected: 0 , ≤ 5.5.2 (custom)	guessed

Date Public

2026-06-09 00:00

Credits

George Chen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
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              "content": {
                "id": "CVE-2026-85667",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-08T17:04:28.746442Z",
                "version": "2.0.3"
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            ],
            "url": "https://github.com/TeamWiseFlow/xiaobei/issues/440"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "xiaobei",
          "vendor": "TeamWiseFlow",
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        }
      ],
      "metrics": [
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            "userInteraction": "NONE",
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      "providerMetadata": {
        "dateUpdated": "2026-09-04T14:32:23.180Z",
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          "name": "GitHub Issue #440",
          "tags": [
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          "url": "https://github.com/TeamWiseFlow/xiaobei/issues/440"
        },
        {
          "tags": [
            "product"
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          "url": "https://github.com/TeamWiseFlow/xiaobei"
        },
        {
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          "url": "https://github.com/TeamWiseFlow/xiaobei/blob/v5.5.2/awada/awada-server/src/routes/webhook-worktool.ts"
        },
        {
          "name": "VulnCheck Advisory: xiaobei through 5.5.2 Unauthenticated Webhook Message Injection",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/xiaobei-through-5.5.2-unauthenticated-webhook-message-injection"
        }
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      "title": "xiaobei through 5.5.2 Unauthenticated Webhook Message Injection",
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      }
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  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-85667",
    "datePublished": "2026-09-04T14:32:23.180Z",
    "dateReserved": "2026-09-04T13:32:30.063Z",
    "dateUpdated": "2026-09-08T17:04:55.181Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-09-14",
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  }
}

FKIE_CVE-2026-85667

Vulnerability from fkie_nvd - Published: 2026-09-04 15:17 - Updated: 2026-09-10 15:53

Severity

9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/TeamWiseFlow/xiaobei
	disclosure@vulncheck.com	https://github.com/TeamWiseFlow/xiaobei/blob/v5.5.2/awada/awada-server/src/routes/webhook-worktool.ts
	disclosure@vulncheck.com	https://github.com/TeamWiseFlow/xiaobei/issues/440
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/xiaobei-through-5.5.2-unauthenticated-webhook-message-injection
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/TeamWiseFlow/xiaobei/issues/440

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "xiaobei",
          "vendor": "TeamWiseFlow",
          "versions": [
            {
              "lessThanOrEqual": "5.5.2",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "xiaobei through 5.5.2 fails to implement authentication or signature validation on webhook endpoints, allowing unauthenticated attackers to inject arbitrary messages into the agent pipeline. Attackers can publish malicious messages via the /webhook_worktool handler and exploit unvalidated media URL fetching to perform server-side request forgery against internal services."
    }
  ],
  "id": "CVE-2026-85667",
  "lastModified": "2026-09-10T15:53:23.707",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-85667",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-08T17:04:28.746442Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-04T15:17:44.543",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/TeamWiseFlow/xiaobei"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/TeamWiseFlow/xiaobei/blob/v5.5.2/awada/awada-server/src/routes/webhook-worktool.ts"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/TeamWiseFlow/xiaobei/issues/440"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/xiaobei-through-5.5.2-unauthenticated-webhook-message-injection"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/TeamWiseFlow/xiaobei/issues/440"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-G573-J843-XR77

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

Details

Severity

9.1 (Critical)


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

9.3 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-85667"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-04T15:17:44Z",
    "severity": "CRITICAL"
  },
  "details": "xiaobei through 5.5.2 fails to implement authentication or signature validation on webhook endpoints, allowing unauthenticated attackers to inject arbitrary messages into the agent pipeline. Attackers can publish malicious messages via the /webhook_worktool handler and exploit unvalidated media URL fetching to perform server-side request forgery against internal services.",
  "id": "GHSA-g573-j843-xr77",
  "modified": "2026-09-04T15:36:15Z",
  "published": "2026-09-04T15:36:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85667"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TeamWiseFlow/xiaobei/issues/440"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TeamWiseFlow/xiaobei"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TeamWiseFlow/xiaobei/blob/v5.5.2/awada/awada-server/src/routes/webhook-worktool.ts"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/xiaobei-through-5.5.2-unauthenticated-webhook-message-injection"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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"
    }
  ]
}

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

CVE-2026-85667 (GCVE-0-2026-85667)

FKIE_CVE-2026-85667

GHSA-G573-J843-XR77

Tags

Sightings

Nomenclature