GHSA-wq92-8x3r-fm38: Vikunja: Planka migration retains an unbounded aggregate of attacker-served attachments and can OOM the API

Planka migration retains an unbounded aggregate of attacker-served attachments and can OOM the API ## Summary The always-registered Planka migration lets any ordinary user select a Planka server. Although Vikunja caps each JSON response, pagination loop, and attachment independently, it has no aggregate job budget. The conversion stage downloads every advertised non-link attachment and keeps every byte slice live until the complete hierarchy is inserted. A public attacker server can therefore drive memory beyond any finite service allocation. …