{"schemaVersion":3,"id":"USN-5021-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"curl vulnerabilities\n\nHarry Sintonen and Tomas Hoger discovered that curl incorrectly handled\nTELNET connections when the -t option was used on the command line.\nUninitialized data possibly containing sensitive information could be sent\nto the remote server, contrary to expectations. (CVE-2021-22898,\nCVE-2021-22925)\n\nHarry Sintonen discovered that curl incorrectly reused connections in the\nconnection pool. This could result in curl reusing the wrong connections.\n(CVE-2021-22924)","dates":{"published":"2021-07-22T18:17:55.000Z","modified":"2026-04-27T09:18:25.635Z","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":"< 7.58.0-2ubuntu3.14","noFixRecorded":false,"fixedIn":null},{"text":"< 7.68.0-1ubuntu2.6","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 7.58.0-2ubuntu3.14 | < 7.68.0-1ubuntu2.6","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-5021-1","label":"ubuntu.com/security/notices/USN-5021-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-22898","label":"ubuntu.com/security/CVE-2021-22898","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-22924","label":"ubuntu.com/security/CVE-2021-22924","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-22925","label":"ubuntu.com/security/CVE-2021-22925","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2021-22898","CVE-2021-22924","CVE-2021-22925"],"downstream":[],"duplicates":[],"related":["CVE-2021-22898","CVE-2021-22924","CVE-2021-22925"]},"timeline":[{"kind":"published","date":"2021-07-22T18:17:55.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T09:18:25.635Z","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":"2026-10-19T09:35:54.234Z","stale":false,"partial":false}}