{"id":"CVE-2020-36420","aliases":["EUVD-2020-23948","GHSA-5hfj-73cx-942m","UBUNTU-CVE-2020-36420"],"status":"published","title":"** UNSUPPORTED WHEN ASSIGNED ** Polipo through 1.1.1 allows denial of service via a reachable...","description":"Polipo through 1.1.1, when NDEBUG is omitted, allows denial of service via a reachable assertion during parsing of a malformed Range header. NOTE: This vulnerability only affects products that are no longer supported by the maintainer","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":0.01901,"percentile":0.79956,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-617"],"published":"2021-07-14T23:23:21Z","modified":"2026-10-20T10:54:21Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"polipo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.1-7"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"polipo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.1-7","1.1.1-8"]}],"products":[{"vendor":"polipo_project","product":"polipo"}],"references":[{"url":"https://www.openwall.com/lists/oss-security/2020/11/18/1","tags":["x_refsource_MISC","x_transferred","Exploit","Mailing List","Third Party Advisory","evidence","report"]},{"url":"https://bugs.gentoo.org/755896","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix","report"]},{"url":"https://github.com/jech/polipo/commit/4d42ca1b5849518762d110f34b6ce2e03d6df9ec","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"http://www.openwall.com/lists/oss-security/2021/07/18/1","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-36420"},{"url":"https://github.com/advisories/GHSA-5hfj-73cx-942m"},{"url":"https://ubuntu.com/security/CVE-2020-36420","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-36420","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-36420","description":"Polipo through 1.1.1, when NDEBUG is omitted, allows denial of service via a reachable assertion during parsing of a malformed Range header. 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NOTE: This vulnerability only affects products that are no longer supported by the maintainer.","status":"published","published":"2022-05-24T19:08:13Z","modified":"2024-03-30T05:01:43Z","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-617"],"updated_at":"2026-11-02T14:55:45.190481Z"}],"nvd":[{"id":"CVE-2020-36420","description":"Polipo through 1.1.1, when NDEBUG is omitted, allows denial of service via a reachable assertion during parsing of a malformed Range header. 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