{"id":"CVE-2023-34188","aliases":["DEBIAN-CVE-2023-34188","EUVD-2023-38288","GHSA-pcw9-xw4x-jgj3","UBUNTU-CVE-2023-34188"],"status":"published","title":"The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers.","description":"The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers. By sending a single attack payload over TCP, an attacker can cause an infinite loop in which the server continuously reparses that payload, and does not respond to any other requests.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01005,"percentile":0.63394,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1284"],"published":"2023-06-23T00:00:00Z","modified":"2026-10-28T10:33:02Z","fixes":[{"ecosystem":"Debian:13","package":"swupdate","fixed_in":["2024.12+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"swupdate","fixed_in":["2024.12+dfsg-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"swupdate","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2022.12+dfsg-4","2022.12+dfsg-4+deb12u1","2022.12+dfsg-4+deb12u1~bpo11+1","2022.12+dfsg-4+deb12u2","2022.12+dfsg-4+deb12u3","2023.05+dfsg-1","2023.05+dfsg-2","2023.05+dfsg-2~bpo12+1","2023.05+dfsg-3","2023.05+dfsg-4","2023.05+dfsg-5","2023.05+dfsg-5~bpo12+1","2023.12+dfsg-1","2023.12+dfsg-1~bpo12+1","2023.12.1+dfsg-1","2023.12.1+dfsg-1~bpo12+1","2023.12.1+dfsg-2","2023.12.1+dfsg-2~bpo12+1","2024.05+dfsg-1","2024.05.2+dfsg-1","2024.05.2+dfsg-2","2024.05.2+dfsg-2~bpo12+1","2024.12+dfsg-1","2024.12+dfsg-2","2024.12+dfsg-2~bpo12+1","2024.12.1+dfsg-1","2024.12.1+dfsg-1~bpo12+1","2024.12.1+dfsg-2","2024.12.1+dfsg-3","2024.12.1+dfsg-3~bpo12+1","2025.05+dfsg-1","2025.05+dfsg-2","2025.05+dfsg-2~bpo13+1","2025.05+dfsg-3","2025.05+dfsg-3~bpo13+1","2025.12+dfsg-1","2025.12+dfsg-10","2025.12+dfsg-10~bpo13+1","2025.12+dfsg-10~bpo13+2","2025.12+dfsg-2","2025.12+dfsg-2~bpo13+1","2025.12+dfsg-3","2025.12+dfsg-4","2025.12+dfsg-5","2025.12+dfsg-6","2025.12+dfsg-7","2025.12+dfsg-7~bpo13+1","2025.12+dfsg-8","2025.12+dfsg-9","2026.05+dfsg-1","2026.05+dfsg-2","2026.05+dfsg-3","2026.05+dfsg-3~bpo13+1","2026.05+dfsg-4","2026.05.1+dfsg-1","2026.05.1+dfsg-1~bpo13+1","2026.05.1+git20261001+dfsg-1","2026.05.1+git20261001+dfsg-2","2026.05.1+git20261001+dfsg-2~bpo13+1"]},{"source":"osv","ecosystem":"Debian:13","package":"swupdate","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2024.12+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"swupdate","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2024.12+dfsg-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"swupdate","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2020.11-2","2021.04-1.1","2021.04-2","2021.04-2build1","2021.11-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"swupdate","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2023.05+dfsg-3","2023.05+dfsg-4","2023.05+dfsg-4build1","2023.05+dfsg-5","2023.12+dfsg-1","2023.12.1+dfsg-1ubuntu1","2023.12.1+dfsg-1ubuntu4","2023.12.1+dfsg-1ubuntu5"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"mongoose","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.21+ds-1","7.21+ds-2","7.22+ds-1","7.23+ds-1"]}],"products":[{"vendor":"cesanta","product":"mongoose"}],"references":[{"url":"https://github.com/cesanta/mongoose/commit/4663090a8fb036146dfe77718cff612b0101cb0f","tags":["x_transferred","Patch","fix","report"]},{"url":"https://github.com/cesanta/mongoose/pull/2197","tags":["x_transferred","Patch","fix"]},{"url":"https://github.com/cesanta/mongoose/compare/7.9...7.10","tags":["x_transferred","Release Notes","web"]},{"url":"https://blog.narfindustries.com/blog/narf-discovers-critical-vulnerabilities-in-cesanta-mongoose-http-server","tags":["x_transferred","article"]},{"url":"https://security.netapp.com/advisory/ntap-20250228-0001/","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34188","tags":["advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20250228-0001"},{"url":"https://github.com/advisories/GHSA-pcw9-xw4x-jgj3"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/34xxx/CVE-2023-34188.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-34188","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-34188","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-34188","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-34188","description":"The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers. By sending a single attack payload over TCP, an attacker can cause an infinite loop in which the server continuously reparses that payload, and does not respond to any other requests.","status":"published","published":"2023-06-23T00:00:00Z","modified":"2025-02-28T13:07:27.141Z","cwes":["CWE-1284"],"updated_at":"2026-11-02T14:35:35.580545Z"}],"euvd":[{"id":"EUVD-2023-38288","description":"The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers. By sending a single attack payload over TCP, an attacker can cause an infinite loop in which the server continuously reparses that payload, and does not respond to any other requests.","status":"published","published":"2023-06-23T00:00:00Z","modified":"2025-02-28T13:07:27Z","cvss":[{"version":"","score":0,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"none"}],"updated_at":"2026-11-02T20:53:19.898689Z"}],"ghsa":[{"id":"GHSA-pcw9-xw4x-jgj3","title":"The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers.","description":"The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers.","status":"published","published":"2023-06-23T21:30:33Z","modified":"2025-02-28T15:30:59Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-1284"],"updated_at":"2026-11-02T15:00:05.050542Z"}],"nvd":[{"id":"CVE-2023-34188","description":"The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers. By sending a single attack payload over TCP, an attacker can cause an infinite loop in which the server continuously reparses that payload, and does not respond to any other requests.","status":"published","published":"2023-06-23T20:15:09.053Z","modified":"2026-06-17T06:03:05.5Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-1284"],"updated_at":"2026-11-02T14:08:12.414559Z"}],"osv":[{"id":"DEBIAN-CVE-2023-34188","description":"The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers. By sending a single attack payload over TCP, an attacker can cause an infinite loop in which the server continuously reparses that payload, and does not respond to any other requests.","status":"published","published":"2023-06-23T20:15:09.053Z","modified":"2026-10-26T18:02:29.034175427Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:39.679062Z"},{"id":"UBUNTU-CVE-2023-34188","description":"The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers. By sending a single attack payload over TCP, an attacker can cause an infinite loop in which the server continuously reparses that payload, and does not respond to any other requests.","status":"published","published":"2023-06-23T20:15:00Z","modified":"2026-10-17T12:56:05.420648165Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:21.882004Z"},{"id":"CVE-2023-34188","description":"The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers. By sending a single attack payload over TCP, an attacker can cause an infinite loop in which the server continuously reparses that payload, and does not respond to any other requests.","status":"published","published":"2023-06-23T00:00:00Z","modified":"2026-10-28T10:33:02.002842518Z","updated_at":"2026-11-02T15:44:32.116263Z"}]}}