{"id":"CVE-2026-114216","published":"2026-10-26T14:16:29.613","lastModified":"2026-10-26T16:59:16.113","description":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in the HTTP/1.1 chunked body reader of mtrudel bandit allows an unauthenticated remote attacker to smuggle a second request past a front-end proxy via a chunk extension that contains a bare LF.\n\nThe chunked reader in lib/bandit/http1/socket.ex takes the chunk-size line to be everything up to the first CRLF and discards everything after ; without checking it against the RFC 9112 chunk-ext grammar, so bare LF, bare CR and other control bytes pass. A proxy that ends the size line at a bare LF reads 2;\\nxx\\r\\n40\\r\\n... as one request whose second chunk holds a GET /admin, while Bandit ends the body early and dispatches GET /admin as a separate pipelined request. Deployments without such a proxy in front of Bandit are not affected.\n\nThis issue affects bandit: from 1.12.4 before 1.14.0.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-444"],"vendors":[],"products":[],"references":[{"url":"https://cna.erlef.org/cves/CVE-2026-114216.html","tags":[]},{"url":"https://github.com/mtrudel/bandit/commit/220b9dfd27f9a21305be2afc75cbe585ddc24e7a","tags":[]},{"url":"https://github.com/mtrudel/bandit/commit/c31e9e3c76dcbfc239a96eabed5341ced7885ae5","tags":[]},{"url":"https://github.com/mtrudel/bandit/security/advisories/GHSA-w5wc-g2hc-g7m2","tags":[]},{"url":"https://osv.dev/vulnerability/EEF-CVE-2026-114216","tags":[]}],"exploitRefs":[{"url":"https://github.com/mtrudel/bandit/commit/220b9dfd27f9a21305be2afc75cbe585ddc24e7a","tags":[]},{"url":"https://github.com/mtrudel/bandit/commit/c31e9e3c76dcbfc239a96eabed5341ced7885ae5","tags":[]},{"url":"https://github.com/mtrudel/bandit/security/advisories/GHSA-w5wc-g2hc-g7m2","tags":[]}],"hasPoc":true,"ai":null}