{"schemaVersion":3,"id":"USN-4898-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"curl vulnerabilities\n\nViktor Szakats discovered that curl did not strip off user credentials\nfrom referrer header fields. A remote attacker could possibly use this\nissue to obtain sensitive information. (CVE-2021-22876)\n\nMingtao Yang discovered that curl incorrectly handled session tickets when\nusing an HTTPS proxy. A remote attacker in control of an HTTPS proxy could\nuse this issue to bypass certificate checks and intercept communications.\nThis issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10.\n(CVE-2021-22890)","dates":{"published":"2021-03-31T10:50:52.000Z","modified":"2026-04-22T10:13:57.538Z","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":"curl","name":"curl","label":"curl","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/curl","purlType":"deb","versions":[{"text":"< 7.47.0-1ubuntu2.19","noFixRecorded":false,"fixedIn":null},{"text":"< 7.58.0-2ubuntu3.13","noFixRecorded":false,"fixedIn":null},{"text":"< 7.68.0-1ubuntu2.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 7.47.0-1ubuntu2.19 | < 7.58.0-2ubuntu3.13 | < 7.68.0-1ubuntu2.5","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4898-1","label":"ubuntu.com/security/notices/USN-4898-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-22876","label":"ubuntu.com/security/CVE-2021-22876","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-22890","label":"ubuntu.com/security/CVE-2021-22890","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2021-22876","CVE-2021-22890"],"downstream":[],"duplicates":[],"related":["CVE-2021-22876","CVE-2021-22890"]},"timeline":[{"kind":"published","date":"2021-03-31T10:50:52.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-22T10:13:57.538Z","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":"2026-10-19T06:23:32.179Z","stale":false,"partial":false}}