hack.fish blogWrite-ups, research notes and disclosure stories from hack.fish.https://hack.fish/fixing a super-linear DoS in the mail gemhttps://hack.fish/blog/mail-gem-all-parts-dos/https://hack.fish/blog/mail-gem-all-parts-dos/A tiny nested email made the mail gem's all_parts cost tens of seconds of CPU, then crash the worker. The bug and the upstream fix.Mon, 26 Oct 2026 00:00:00 GMT