CVE-2026-4959

{
  "id": "CVE-2026-4959",
  "sourceIdentifier": "[email protected]",
  "published": "2026-03-27T16:16:25.163",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was found in OpenBMB XAgent 1.0.0. This impacts the function check_user of the file XAgentServer/application/websockets/share.py of the component ShareServer WebSocket Endpoint. Performing a manipulation of the argument interaction_id results in missing authentication. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way."
    },
    {
      "lang": "es",
      "value": "Se encontró una vulnerabilidad en OpenBMB XAgent 1.0.0. Esto impacta la función check_user del archivo XAgentServer/application/websockets/share.py del componente ShareServer WebSocket Endpoint. Realizar una manipulación del argumento interaction_id resulta en falta de autenticación. La explotación remota del ataque es posible. El exploit ha sido hecho público y podría ser usado. 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": [
            "ShareServer WebSocket Endpoint"
          ],
          "versions": [
            {
              "version": "1.0.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
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        "type": "Secondary",
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          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnAvailabilityImpact": "LOW",
          "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"
        }
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      }
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    "cvssMetricV2": [
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        "type": "Secondary",
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          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL"
        },
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        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
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    "ssvcV203": [
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        "ssvcData": {
          "timestamp": "2026-03-31T15:09:12.809645Z",
          "id": "CVE-2026-4959",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
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              "technicalImpact": "partial"
            }
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          "role": "CISA Coordinator",
          "version": "2.0.3"
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  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        },
        {
          "lang": "en",
          "value": "CWE-306"
        }
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          "cpeMatch": [
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  "references": [
    {
      "url": "https://gist.github.com/YLChen-007/531ec6b169f4b9ecbc8c2f0b2cd7c5ee",
      "source": "[email protected]",
      "tags": [
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      "source": "[email protected]",
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        "Permissions Required",
        "VDB Entry"
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      "source": "[email protected]",
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      "url": "https://vuldb.com/?submit.777622",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
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    }
  ]
}