tag
Forum-Software
None assigned as of 2026-07-03
web
HIGH
NodeBB ActivityPub attributedTo Local UID Spoof
NodeBB's ActivityPub inbox authenticates the top-level signed actor of an incoming activity via HTTP Signatures, but never checks that the embedded Note.attributedTo field — used later as the internal local user id for chat message and post authorship —…
Unverified
2026-07-03
None assigned as of 2026-07-03
web
HIGH
MyBB 1.8.40 Limited Admin CP User-Manager to Full Administrator Privilege Escalation
A non-super Admin CP account that has only the user-management permission (user-users = 1) can use the standard Admin CP "add user" form to create a brand-new account directly in the Administrator group (gid=4), because the underlying user data handler's…
Unpatched
2026-07-03