{"schemaVersion":3,"id":"CVE-2026-27857","aliases":["ALPINE-CVE-2026-27857","UBUNTU-CVE-2026-27857","DEBIAN-CVE-2026-27857"],"status":"published","duplicateOf":null,"title":null,"description":"Sending \"NOOP (((...)))\" command with 4000 parenthesis open+close results in ~1MB extra memory usage. Longer commands will result in client disconnection. This 1 MB can be left allocated for longer time periods by not sending the command ending LF. So attacker could connect possibly from even a single IP and create 1000 connections to allocate 1 GB of memory, which would likely result in reaching VSZ limit and killing the process and its other proxied connections. Attacker could connect possibly from even a single IP and create 1000 connections to allocate 1 GB of memory, which would likely result in reaching VSZ limit and killing the process and its other proxied connections. Install fixed version, there is no other remediation. 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