{"schemaVersion":3,"id":"USN-4895-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"squid, squid3 vulnerabilities\n\nAlex Rousskov and Amit Klein discovered that Squid incorrectly handled\ncertain Content-Length headers. A remote attacker could possibly use this\nissue to perform an HTTP request smuggling attack, resulting in cache\npoisoning. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-15049)\n\nJianjun Chen discovered that Squid incorrectly validated certain input. A\nremote attacker could use this issue to perform HTTP Request Smuggling and\npossibly access services forbidden by the security controls.\n(CVE-2020-25097)","dates":{"published":"2021-03-29T13:05:00.000Z","modified":"2026-02-10T04:42:07.000Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"squid","name":"squid","label":"squid","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/squid","purlType":"deb","versions":[{"text":"< 4.10-1ubuntu1.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.10-1ubuntu1.3","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"squid3","name":"squid3","label":"squid3","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/squid3","purlType":"deb","versions":[{"text":"< 3.5.12-1ubuntu7.16","noFixRecorded":false,"fixedIn":null},{"text":"< 3.5.27-1ubuntu1.10","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.5.12-1ubuntu7.16 | < 3.5.27-1ubuntu1.10","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4895-1","label":"ubuntu.com/security/notices/USN-4895-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-15049","label":"ubuntu.com/security/CVE-2020-15049","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-25097","label":"ubuntu.com/security/CVE-2020-25097","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2020-15049","CVE-2020-25097"],"downstream":[],"duplicates":[],"related":["CVE-2020-15049","CVE-2020-25097"]},"timeline":[{"kind":"published","date":"2021-03-29T13:05:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-02-10T04:42:07.000Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T05:46:10.104Z","stale":false,"partial":false}}