{"apiVersion":"1.0","identifier":"CVE-2026-45128","description":"MyBB is free and open source forum software. Prior to 1.8.40, the ACP Users View Manager module does not validate requests correctly, allowing same-site attackers to change a victim administrator-s default user list view by embedding a specially crafted URL. The Set as Default control named set_default in Admin CP, Users & Groups, Users, View Manager changes the administrator-s default view on GET requests without request forgery protection. The uniquely identifying implementation details include Users & Groups → Users → View Manager, and admin/inc/functions_view_manager.php. This issue is fixed in version 1.8.40.","publishedAt":"2026-08-18T16:17:08","lastModifiedAt":"2026-08-18T18:17:37","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-45128","cvssScore":3.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N","epssProbability":0.00132,"riskScore":0.35,"affectedProduct":"MyBB","affectedVersions":"<1.8.40","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-45128","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-45128","en":"https://www.redsauce.net/en/cves/CVE-2026-45128","fr":"https://www.redsauce.net/fr/cves/CVE-2026-45128","pt":"https://www.redsauce.net/pt/cves/CVE-2026-45128","de":"https://www.redsauce.net/de/cves/CVE-2026-45128","sk":"https://www.redsauce.net/sk/cves/CVE-2026-45128","el":"https://www.redsauce.net/el/cves/CVE-2026-45128"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-45128"}}