CVE-2026-58054
MyBB MyBB 취약점
MyBB 1.8.40 does not restrict which usergroup a limited Admin Control Panel user may assign when creating or editing users; the user module offers the Administrators group (gid 4) and its datahandler's verify_usergroup() unconditionally returns true. An admin holding only the delegated user-management permission can assign the Administrators group to an account and escalate to the full Administrator permission set.
- 대응 우선순위
- 점검
- CVSS
- 8.6
- EPSS
- 0.27% 백분위 19.2% · 2026.07.20 기준
- CISA KEV
- 미등록
- 조치 기한
- -
- 공개일
- 2026.06.28