CVE-2026-55078: Coder: Zip upload decompression lacks aggregate size limit, enabling denial of service

POST /api/v2/files converts zip uploads to tar in memory via CreateTarFromZip, which enforced a per-entry size limit but no aggregate limit on total decompressed output, writing to an unbounded in-memory buffer.

Note: Exploitation requires authenticated file-upload access and the impact is limited to availability (denial of service).