{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-45126",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-05-08T20:08:17.208Z",
        "datePublished": "2026-08-18T15:47:09.205Z",
        "dateUpdated": "2026-08-18T18:02:06.736Z"
    },
    "containers": {
        "cna": {
            "title": "MyBB: ACP Questions state CSRF",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-352",
                            "lang": "en",
                            "description": "CWE-352: Cross-Site Request Forgery (CSRF)",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 3.5,
                        "baseSeverity": "LOW",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/mybb/mybb/security/advisories/GHSA-m42q-vgx3-fqcc",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/mybb/mybb/security/advisories/GHSA-m42q-vgx3-fqcc"
                },
                {
                    "name": "https://github.com/mybb/mybb/commit/6893b395c7fa3b9e4de6235caea0ce198c376c4f",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/mybb/mybb/commit/6893b395c7fa3b9e4de6235caea0ce198c376c4f"
                },
                {
                    "name": "https://github.com/mybb/mybb/releases/tag/mybb_1840",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/mybb/mybb/releases/tag/mybb_1840"
                },
                {
                    "name": "https://mybb.com/versions/1.8.40",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://mybb.com/versions/1.8.40"
                }
            ],
            "affected": [
                {
                    "vendor": "mybb",
                    "product": "mybb",
                    "versions": [
                        {
                            "version": "< 1.8.40",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-18T15:47:09.205Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "MyBB is free and open source forum software. Prior to 1.8.40, the Admin CP Security Questions module does not validate the anti-CSRF token correctly, allowing same-site attackers to enable or disable registration challenge questions with a specially crafted URL. The controller processes GET requests for the disable and enable actions to modify mybb_questions.active without verifying the my_post_key token attached by the user interface. The uniquely identifying implementation details include admin/modules/config/questions.php. This issue is fixed in version 1.8.40."
                }
            ],
            "source": {
                "advisory": "GHSA-m42q-vgx3-fqcc",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-18T18:00:33.448166Z",
                                "id": "CVE-2026-45126",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-08-18T18:02:06.736Z"
                }
            }
        ]
    }
}