CVE-2026-62852 (GCVE-0-2026-62852)

Vulnerability from cvelistv5 – Published: 2026-11-06 17:03 – Updated: 2026-11-06 17:03
VLAI
Title
FreeScout: Missing Authorization and Exposure of Sensitive Information to an Unauthorized Actor and Authorization Bypass Through User-Controlled Key
Summary
FreeScout is a self-hosted help desk and shared mailbox. Prior to 1.8.226, RealtimeConvNewThread checks only general mailbox access and does not apply the conversation-level restriction for users configured to see only assigned conversations. A restricted authenticated user can subscribe to predictable conv.<conversation_id> Polycast channels for other conversations in the same mailbox. New event payloads can expose complete replies, internal notes, recipient addresses, conversation state, assignee data, attachment names, and attachment URLs containing valid download tokens. This issue is fixed in version 1.8.226.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-862 - Missing Authorization
Assigner
GitHub_M CNA
References
Impacted products
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "freescout",
          "vendor": "freescout-help-desk",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.8.226"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "FreeScout is a self-hosted help desk and shared mailbox. Prior to 1.8.226, RealtimeConvNewThread checks only general mailbox access and does not apply the conversation-level restriction for users configured to see only assigned conversations. A restricted authenticated user can subscribe to predictable conv.\u003cconversation_id\u003e Polycast channels for other conversations in the same mailbox. New event payloads can expose complete replies, internal notes, recipient addresses, conversation state, assignee data, attachment names, and attachment URLs containing valid download tokens. This issue is fixed in version 1.8.226."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862: Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-06T17:03:33.062Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-w668-wq26-6c94",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-w668-wq26-6c94"
        },
        {
          "name": "https://github.com/freescout-help-desk/freescout/commit/e47a54a5af6c57181ef99711326f5886e940b776",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/freescout-help-desk/freescout/commit/e47a54a5af6c57181ef99711326f5886e940b776"
        },
        {
          "name": "https://github.com/freescout-help-desk/freescout/releases/tag/1.8.226",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/freescout-help-desk/freescout/releases/tag/1.8.226"
        }
      ],
      "source": {
        "advisory": "GHSA-w668-wq26-6c94",
        "discovery": "UNKNOWN"
      },
      "title": "FreeScout: Missing Authorization and Exposure of Sensitive Information to an Unauthorized Actor and Authorization Bypass Through User-Controlled Key"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-62852",
    "datePublished": "2026-11-06T17:03:33.062Z",
    "dateReserved": "2026-07-14T21:10:50.031Z",
    "dateUpdated": "2026-11-06T17:03:33.062Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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