{"id":"CVE-2020-7670","aliases":["EUVD-2020-1430","GHSA-h385-52j6-9984","SNYK-RUBY-AGOO-569137"],"status":"published","title":"Withdrawn: HTTP Request Smuggling in Agoo","description":"agoo prior to 2.14.0 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks where `agoo` is used as part of a chain of backend servers due to insufficient `Content-Length` and `Transfer Encoding` parsing.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0117,"percentile":0.67637,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-444"],"published":"2020-06-10T15:36:01Z","modified":"2026-10-20T14:14:32Z","products":[{"vendor":"ohler","product":"agoo"}],"references":[{"url":"https://snyk.io/vuln/SNYK-RUBY-AGOO-569137","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/ohler55/agoo/issues/88","tags":["x_refsource_MISC","x_transferred","report","web"]},{"url":"https://github.com/ohler55/agoo/commit/23d03535cf7b50d679a60a953a0cae9519a4a130","tags":["x_refsource_MISC","x_transferred","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7670","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-h385-52j6-9984"}],"sources":{"cve":[{"id":"CVE-2020-7670","description":"agoo prior to 2.14.0 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks where `agoo` is used as part of a chain of backend servers due to insufficient `Content-Length` and `Transfer Encoding` parsing.","status":"published","published":"2020-06-10T15:36:01Z","modified":"2024-08-04T09:41:00.497Z","updated_at":"2026-11-02T14:35:58.331892Z"}],"euvd":[{"id":"EUVD-2020-1430","description":"agoo prior to 2.14.0 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks where `agoo` is used as part of a chain of backend servers due to insufficient `Content-Length` and `Transfer Encoding` parsing.","status":"published","published":"2020-06-10T15:36:01Z","modified":"2024-08-04T09:41:00Z","updated_at":"2026-11-03T03:07:59.058668Z"}],"ghsa":[{"id":"GHSA-h385-52j6-9984","title":"Withdrawn: HTTP Request Smuggling in Agoo","description":"# Withdrawn reason\nWithdrawn on 1/13/2021 due to [this comment from the maintainer](https://github.com/ohler55/agoo/issues/88#issuecomment-723580783).  This is no longer considered a vulnerability.\n\n# Original description\nagoo through 2.12.3 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. It is possible to conduct HTTP request smuggling attacks by sending the Content-Length header twice. Furthermore, invalid Transfer Encoding headers were found to be parsed as valid which could be leveraged for TE:CL smuggling attacks.","status":"withdrawn","published":"2020-10-20T19:15:38Z","modified":"2023-01-09T05:04:15Z","cwes":["CWE-444"],"updated_at":"2026-11-02T14:36:09.554044Z"}],"nvd":[{"id":"CVE-2020-7670","description":"agoo prior to 2.14.0 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks where `agoo` is used as part of a chain of backend servers due to insufficient `Content-Length` and `Transfer Encoding` parsing.","status":"published","published":"2020-06-10T16:15:10.54Z","modified":"2026-06-17T03:25:14.123Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-444"],"updated_at":"2026-11-02T14:06:05.962132Z"}],"osv":[{"id":"CVE-2020-7670","description":"agoo prior to 2.14.0 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks where `agoo` is used as part of a chain of backend servers due to insufficient `Content-Length` and `Transfer Encoding` parsing.","status":"published","published":"2020-06-10T16:15:10.54Z","modified":"2026-10-20T14:14:32.476950374Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:17.34531Z"},{"id":"GHSA-h385-52j6-9984","title":"Withdrawn: HTTP Request Smuggling in Agoo","description":"# Withdrawn reason\nWithdrawn on 1/13/2021 due to [this comment from the maintainer](https://github.com/ohler55/agoo/issues/88#issuecomment-723580783).  This is no longer considered a vulnerability.\n\n# Original description\nagoo through 2.12.3 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. It is possible to conduct HTTP request smuggling attacks by sending the Content-Length header twice. Furthermore, invalid Transfer Encoding headers were found to be parsed as valid which could be leveraged for TE:CL smuggling attacks.","status":"withdrawn","published":"2020-10-20T19:15:38Z","modified":"2026-09-10T03:48:58.890885784Z","cwes":["CWE-444"],"updated_at":"2026-11-02T15:46:48.546324Z"}]}}