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vuln-cve/data/2026/45xxx/CVE-2026-45126.json
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{
"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"
}
}
]
}
}