CVE-2026-4958

{
  "id": "CVE-2026-4958",
  "sourceIdentifier": "[email protected]",
  "published": "2026-03-27T16:16:24.943",
  "lastModified": "2026-10-26T22:10:00.163",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability has been found in OpenBMB XAgent 1.0.0. This affects the function ReplayServer.on_connect/ReplayServer.send_data of the file XAgentServer/application/websockets/replayer.py of the component WebSocket Endpoint. Such manipulation of the argument interaction_id leads to authorization bypass. The attack may be launched remotely. Attacks of this nature are highly complex. The exploitability is reported as difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado una vulnerabilidad en OpenBMB XAgent 1.0.0. Esto afecta a la función ReplayServer.on_connect/ReplayServer.send_data del archivo XAgentServer/application/websockets/replayer.py del componente WebSocket Endpoint. Dicha manipulación del argumento interaction_id conduce a una omisión de autorización. El ataque puede ser lanzado remotamente. Los ataques de esta naturaleza son altamente complejos. La explotabilidad se reporta como difícil. El exploit ha sido divulgado al público y puede ser utilizado. El proveedor fue contactado tempranamente sobre esta divulgación, pero no respondió de ninguna manera."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "OpenBMB",
          "product": "XAgent",
          "cpes": [
            "cpe:2.3:a:openbmb:xagent:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "WebSocket Endpoint"
          ],
          "versions": [
            {
              "version": "1.0.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
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        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
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          "baseScore": 1.3,
          "baseSeverity": "LOW",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "cvssMetricV31": [
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        "type": "Secondary",
        "cvssData": {
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      },
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        "source": "[email protected]",
        "type": "Primary",
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          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
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      }
    ],
    "cvssMetricV2": [
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        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
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          "baseScore": 2.1,
          "accessVector": "NETWORK",
          "accessComplexity": "HIGH",
          "authentication": "SINGLE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "baseSeverity": "LOW",
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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      }
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    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-03-30T12:09:23.025661Z",
          "id": "CVE-2026-4958",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-285"
        },
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
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  "references": [
    {
      "url": "https://gist.github.com/YLChen-007/dc46c2a710ecb9e855695f32da8bcab5",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Third Party Advisory"
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    },
    {
      "url": "https://vuldb.com/?ctiid.353835",
      "source": "[email protected]",
      "tags": [
        "Permissions Required",
        "VDB Entry"
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    },
    {
      "url": "https://vuldb.com/?id.353835",
      "source": "[email protected]",
      "tags": [
        "Permissions Required",
        "VDB Entry"
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    },
    {
      "url": "https://vuldb.com/?submit.777618",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ]
    }
  ]
}