CVE-2026-5323

{
  "id": "CVE-2026-5323",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-02T07:15:58.793",
  "lastModified": "2026-10-26T22:10:00.163",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was found in priyankark a11y-mcp up to 1.0.5. This vulnerability affects the function A11yServer of the file src/index.js. The manipulation results in server-side request forgery. The attack must be initiated from a local position. The exploit has been made public and could be used. This product operates on a rolling release basis, ensuring continuous delivery. Consequently, there are no version details for either affected or updated releases. Upgrading to version 1.0.6 is able to resolve this issue. The patch is identified as e3e11c9e8482bd06b82fd9fced67be4856f0dffc. It is recommended to upgrade the affected component. The vendor acknowledged the issue but provides additional context for the CVSS rating: \"a11y-mcp is a local stdio MCP server - it has no HTTP endpoint and is not network-accessible. The caller is always the local user or an LLM acting on their behalf with user approval.\""
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad fue encontrada en priyankark a11y-mcp hasta la versión 1.0.5. Esta vulnerabilidad afecta a la función A11yServer del archivo src/index.js. La manipulación resulta en falsificación de petición del lado del servidor. El ataque debe ser iniciado desde una posición local. El exploit ha sido hecho público y podría ser utilizado. Este producto opera bajo un modelo de lanzamiento continuo, asegurando la entrega continua. Consecuentemente, no hay detalles de versión ni para las versiones afectadas ni para las actualizadas. La actualización a la versión 1.0.6 es capaz de resolver este problema. El parche se identifica como e3e11c9e8482bd06b82fd9fced67be4856f0dffc. Se recomienda actualizar el componente afectado. El proveedor reconoció el problema pero proporciona contexto adicional para la calificación CVSS: ’a11y-mcp es un servidor MCP stdio local; no tiene un punto final HTTP y no es accesible por red. El llamador es siempre el usuario local o un LLM que actúa en su nombre con la aprobación del usuario.’"
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "priyankark",
          "product": "a11y-mcp",
          "versions": [
            {
              "version": "1.0.0",
              "status": "affected"
            },
            {
              "version": "1.0.1",
              "status": "affected"
            },
            {
              "version": "1.0.2",
              "status": "affected"
            },
            {
              "version": "1.0.3",
              "status": "affected"
            },
            {
              "version": "1.0.4",
              "status": "affected"
            },
            {
              "version": "1.0.5",
              "status": "affected"
            },
            {
              "version": "1.0.6",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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",
          "baseScore": 1.9,
          "baseSeverity": "LOW",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "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"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.4
      }
    ],
    "cvssMetricV2": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:P",
          "baseScore": 4.3,
          "accessVector": "LOCAL",
          "accessComplexity": "LOW",
          "authentication": "SINGLE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL"
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 3.1,
        "impactScore": 6.4,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-03T19:49:31.615110Z",
          "id": "CVE-2026-5323",
          "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-918"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/priyankark/a11y-mcp/",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/priyankark/a11y-mcp/commit/e3e11c9e8482bd06b82fd9fced67be4856f0dffc",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/wing3e/public_exp/issues/17",
      "source": "[email protected]"
    },
    {
      "url": "https://vuldb.com/submit/780752",
      "source": "[email protected]"
    },
    {
      "url": "https://vuldb.com/vuln/354655",
      "source": "[email protected]"
    },
    {
      "url": "https://vuldb.com/vuln/354655/cti",
      "source": "[email protected]"
    }
  ]
}