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{
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          {
            "other": {
              "content": {
                "id": "CVE-2026-123271",
                "options": [
                  {
                    "Exploitation": "none"
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                  {
                    "Automatable": "no"
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                "timestamp": "2026-11-09T17:35:45.381543Z",
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          "dateUpdated": "2026-11-09T17:44:06.128Z",
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        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:golang/github.com/diillson/chatcli",
          "product": "ChatCLI",
          "repo": "https://github.com/diillson/chatcli",
          "vendor": "diillson",
          "versions": [
            {
              "lessThan": "v1.215.2",
              "status": "affected",
              "version": "v1.159.0",
              "versionType": "custom"
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          "type": "finder",
          "value": "Theodoros Lampropoulos"
        },
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          "type": "remediation developer",
          "value": "diillson"
        }
      ],
      "datePublic": "2026-10-11T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "ChatCLI before v1.215.2 contains an improper validation vulnerability in the MCP OAuth login flow that uses server-supplied Protected Resource Metadata as the resource indicator without checking it matches the configured server URL. A malicious MCP server can declare another resource on the same authorization server, obtain the user\u0027s bearer token for it, and replay that token against the other resource."
        }
      ],
      "metrics": [
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            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
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            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N",
            "version": "4.0",
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            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
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        },
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            "baseSeverity": "HIGH",
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            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N",
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-346",
              "description": "Origin Validation Error",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-08T14:01:06.022Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-95vg-3r9c-2v5q)",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/diillson/chatcli/security/advisories/GHSA-95vg-3r9c-2v5q"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/diillson/chatcli/commit/951fe24b8e090eae86bf8edb13a788916b1e6c91"
        },
        {
          "name": "ChatCLI v1.215.2 Release Notes",
          "tags": [
            "release-notes"
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          "url": "https://github.com/diillson/chatcli/releases/tag/v1.215.2"
        },
        {
          "tags": [
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          ],
          "url": "https://github.com/diillson/chatcli/blob/359eb27debc4de78289a9662551a51ab4528e16c/cli/mcp/oauth.go#L477-L493"
        },
        {
          "name": "VulnCheck Advisory: ChatCLI before v1.215.2 Origin Validation Error via Unvalidated MCP OAuth Resource Indicator",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/chatcli-before-1.215.2-origin-validation-error-via-unvalidated-mcp-oauth-resource-indicator"
        }
      ],
      "title": "ChatCLI before v1.215.2 Origin Validation Error via Unvalidated MCP OAuth Resource Indicator",
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    "datePublished": "2026-11-05T18:45:35.481Z",
    "dateReserved": "2026-11-05T18:19:12.338Z",
    "dateUpdated": "2026-11-09T17:44:06.128Z",
    "state": "PUBLISHED"
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