{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-53958",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-11T15:50:01.282Z",
        "datePublished": "2026-08-18T21:34:59.454Z",
        "dateUpdated": "2026-08-19T16:12:54.624Z"
    },
    "containers": {
        "cna": {
            "title": "4gaBoards: SSO Pre-Account Takeover / Hijacking via Mass Assignment",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-287",
                            "lang": "en",
                            "description": "CWE-287: Improper Authentication",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-915",
                            "lang": "en",
                            "description": "CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "LOW",
                        "baseScore": 7.6,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/RARgames/4gaBoards/security/advisories/GHSA-j2fw-r2gj-hfr3",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/RARgames/4gaBoards/security/advisories/GHSA-j2fw-r2gj-hfr3"
                },
                {
                    "name": "https://github.com/RARgames/4gaBoards/commit/7a79f4c5d338614058515752abd67e49ee2818bb",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/RARgames/4gaBoards/commit/7a79f4c5d338614058515752abd67e49ee2818bb"
                },
                {
                    "name": "https://github.com/RARgames/4gaBoards/releases/tag/v3.3.9",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/RARgames/4gaBoards/releases/tag/v3.3.9"
                }
            ],
            "affected": [
                {
                    "vendor": "RARgames",
                    "product": "4gaBoards",
                    "versions": [
                        {
                            "version": "< 3.3.9",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-18T21:34:59.454Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "4gaBoards is a boards system for realtime project management. Prior to 3.3.9, 4gaBoards allows an authenticated user to modify ssoGoogleId, ssoGoogleEmail, ssoGithubId, ssoGithubUsername, ssoGithubEmail, ssoMicrosoftId, ssoMicrosoftEmail, ssoOidcId, and ssoOidcEmail through PATCH /api/users/:id. The whitelist in server/api/controllers/users/update.js mass assigns these backend-managed identity attributes from user input. An attacker can place a victim's provider identifier on an attacker-controlled account, causing the default lookup in helpers such as server/api/helpers/users/get-create-one-for-github-sso.js to match the victim's first SSO login to the attacker's account before the email-linkage flow runs. The victim is logged into the attacker-controlled account, and projects, boards, or data the victim creates remain accessible through the attacker's original local credentials. This issue is fixed in version 3.3.9."
                }
            ],
            "source": {
                "advisory": "GHSA-j2fw-r2gj-hfr3",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/RARgames/4gaBoards/security/advisories/GHSA-j2fw-r2gj-hfr3",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-19T16:11:43.992653Z",
                                "id": "CVE-2026-53958",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "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": "2026-08-19T16:12:54.624Z"
                }
            }
        ]
    }
}