{"schema_version":"1.9.0","id":"GHSA-27r3-jxmh-p828","published":"2026-10-23T20:53:11Z","modified":"2026-10-23T21:00:06.131613693Z","aliases":["CVE-2026-111181"],"summary":"body-parser vulnerable to Denial of Service via trailing bytes after a compressed request body","details":"### Impact\n\nA single request can crash any application using `body-parser` with default options. When a request carries a `Content-Encoding` (for example `gzip`), `body-parser` pipes it into a decompression stream and, after reading the body, leaves that stream piped with no error listener. A payload of one valid compressed frame followed by trailing bytes decodes and the application responds normally, but the trailing bytes then reach the already-finished decoder, which emits an error that is re-thrown as an uncaught exception and terminates the process. No authentication or matching route is required, since parsing runs before routing.\n\n### Patches\n\nFixed in body-parser 2.4.0 and 1.20.9. Upgrade to one of these versions.\n\n### Workarounds\n\nPass `inflate: false` to the body-parser middleware if the application does not need to accept compressed request bodies. This rejects encoded requests before any decompression stream is created.","affected":[{"package":{"name":"body-parser","ecosystem":"npm","purl":"pkg:npm/body-parser"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.0.0"},{"fixed":"2.4.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-27r3-jxmh-p828/GHSA-27r3-jxmh-p828.json"}},{"package":{"name":"body-parser","ecosystem":"npm","purl":"pkg:npm/body-parser"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.20.9"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-27r3-jxmh-p828/GHSA-27r3-jxmh-p828.json"}}],"references":[{"type":"WEB","url":"https://github.com/expressjs/body-parser/security/advisories/GHSA-27r3-jxmh-p828"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111181"},{"type":"WEB","url":"https://github.com/expressjs/body-parser/commit/1260c3845f54502a05a87594f09a334786bb34d7"},{"type":"WEB","url":"https://github.com/expressjs/body-parser/commit/f7075eae3a84c3473ab4bf0a777da28db208e916"},{"type":"WEB","url":"https://cna.openjsf.org/security-advisories.html"},{"type":"PACKAGE","url":"https://github.com/expressjs/body-parser"},{"type":"WEB","url":"https://github.com/expressjs/body-parser/releases/tag/1.20.9"},{"type":"WEB","url":"https://github.com/expressjs/body-parser/releases/tag/v2.4.0"}],"database_specific":{"cwe_ids":["CWE-248"],"github_reviewed":true,"github_reviewed_at":"2026-10-23T20:53:11Z","nvd_published_at":"2026-10-22T15:17:04Z","severity":"HIGH"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}