{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-53595",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-09T19:39:52.403Z",
        "datePublished": "2026-07-20T20:14:59.365Z",
        "dateUpdated": "2026-07-21T14:56:21.784Z"
    },
    "containers": {
        "cna": {
            "title": "FreeScout vulnerable to anonymous account takeover via /user-setup empty invite_hash on MySQL",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-178",
                            "lang": "en",
                            "description": "CWE-178: Improper Handling of Case Sensitivity",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-287",
                            "lang": "en",
                            "description": "CWE-287: Improper Authentication",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-640",
                            "lang": "en",
                            "description": "CWE-640: Weak Password Recovery Mechanism for Forgotten Password",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "LOW",
                        "baseScore": 9.4,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-jqj5-r72v-v29g",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-jqj5-r72v-v29g"
                }
            ],
            "affected": [
                {
                    "vendor": "freescout-help-desk",
                    "product": "freescout",
                    "versions": [
                        {
                            "version": "< 1.8.224",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-07-20T20:14:59.365Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.224, the public endpoint `POST /user-setup/{hash}/{invite_sent_at}` (`OpenController@userSetupSave`) selects the target account solely by its `invite_hash` column, then overwrites that account's email and password and logs in as it. No authentication, cookie, or prior session is required. After a user activates, FreeScout sets `invite_hash` to the empty string. On MySQL and MariaDB, `VARCHAR` equality ignores trailing spaces, so a single URL-encoded space (`%20`) matches the stored empty string and selects the lowest-id activated user. The expiry guard decrypts `invite_sent_at` with the target's password hash, but `Helper::decrypt` returns its raw input unchanged when decryption fails. A plaintext numeric value such as `9999999999` therefore passes the time-to-live check without any secret. The result is that an anonymous attacker sets the email and password of the lowest-id activated FreeScout account (a support agent, or an administrator if one was added by invitation) and authenticates as that account. Version 1.8.224 contains a fix."
                }
            ],
            "source": {
                "advisory": "GHSA-jqj5-r72v-v29g",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-jqj5-r72v-v29g",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-21T13:20:35.944303Z",
                                "id": "CVE-2026-53595",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-07-21T14:56:21.784Z"
                }
            }
        ]
    }
}