{"id":"ghsa-ghsa-cwm5-jh59-mwxr","seq":661342,"kind":"advisory","title":"Twisted: Unauthenticated Remote Denial of Service in the Twisted conch Telnet Transport via an Unbounded Subnegotiation Buffer","url":"https://github.com/advisories/GHSA-cwm5-jh59-mwxr","permalink":"https://vulnpulse.app/items/ghsa-ghsa-cwm5-jh59-mwxr","summary":"影響: pip:Twisted <= 26.4.0 → 26.10.0rc1\nAn allocation-without-limits vulnerability (CWE-770) in the Twisted conch telnet transport lets any unauthenticated remote peer exhaust server memory over a single connection. When the peer opens a telnet subnegotiation with IAC SB and then streams bytes without ever sending the IAC SE terminator, every byte is appended to a per-connection buffer that has no maximum length. The buffer persists across reads and is released only on the terminator the attacker withholds, so it grows without bound…","severity":"high","techs":["python"],"cves":["CVE-2026-115778"],"tags":["GHSA-cwm5-jh59-mwxr","Twisted"],"source":{"id":"ghsa","name":"GitHub Advisory Database"},"published_at":"2026-10-23T20:45:26.000Z","fetched_at":"2026-10-24T04:50:51.468Z"}