BTCPay Server asked instance operators to shut down pending investigation after receiving reports of unauthorized hot-wallet sweeps on Nov. 1.⁠1

Nicolas Dorier later said his public servers, running 2.4.7, had not been attacked. Reports seemed to concern versions before 2.4.2; an attacker had logged in as administrator, but how remained unknown.⁠2

In a subsequent reply, Dorier said traces pointed to vulnerabilities predating 2.4.2 and promised more detail in a blog post.⁠3 These are attributed accounts, not Bloomboff's independent forensic findings.

Bloomboff's take

Version numbers are not force fields. His report of unaffected servers is not a safety certificate for every installation. Keep the broad warning separate from the provisional scope. Reading that scope as a universal all-clear is expensive bullshit.