[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-UBUNTU-CVE-2021-20220":6},{"stargazers_count":4,"fetched_at":5},7,"2026-06-05T08:55:32.481Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":11,"aliases":12,"duplicate_of":9,"upstream":13,"downstream":16,"duplicates":17,"related":18,"reserved_at":9,"published_at":19,"modified_at":20,"state":9,"summary":21,"references_raw":23,"kevs":38,"epss":9,"epss_history":39,"metrics":40,"affected":47},"UBUNTU-CVE-2021-20220","A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain sensitive information from request other than their own. The highest threat from this vulnerability is to data confidentiality and integrity.",null,[],[],[],[14],{"_key":15},"CVE-2021-20220",[],[],[],"2021-02-23T18:15:00Z","2026-05-20T16:04:42.868776380Z",{"cisa_kev":22,"cisa_ransomware":22,"cisa_vendor":9,"epss_severity":9,"epss_score":9,"severity":9,"severity_score":9,"severity_version":9,"severity_source":9,"severity_vector":9,"severity_status":9},false,[24,30,34],{"url":25,"sources":26,"tags":28},"https://ubuntu.com/security/CVE-2021-20220",[27],"osv_ubuntu",[29],"REPORT",{"url":31,"sources":32,"tags":33},"https://bugzilla.redhat.com/show_bug.cgi?id=1923133",[27],[29],{"url":35,"sources":36,"tags":37},"https://www.cve.org/CVERecord?id=CVE-2021-20220",[27],[29],[],[],[41],{"source":27,"cvss_v2_0":9,"cvss_v3_0":9,"cvss_v3_1":42,"cvss_v4_0":9},{"baseScore":43,"baseSeverity":9,"vectorString":44,"impactScore":45,"exploitabilityScore":46},4.8,"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",4.2,5.6,[48],{"ecosystem":49,"name":50,"vendor":51,"product":50,"cpe_part":9,"purl_type":52,"purl_namespace":51,"purl_name":50,"source":9,"versions":53},"Ubuntu","undertow","ubuntu","deb",[54,58,59,60,61,62,63,64],{"version":55,"is_range":56,"range_type":57,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},"all",true,"ecosystem",{"version":55,"is_range":56,"range_type":57,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},{"version":55,"is_range":56,"range_type":57,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},{"version":55,"is_range":56,"range_type":57,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},{"version":55,"is_range":56,"range_type":57,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},{"version":55,"is_range":56,"range_type":57,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},{"version":55,"is_range":56,"range_type":57,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},{"version":55,"is_range":56,"range_type":57,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9}]