{"schemaVersion":3,"id":"USN-8932-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"curl vulnerabilities\n\nStanislav Fort discovered that curl did not properly clear AWS SigV4\nauthentication state when CURLOPT_AWS_SIGV4 was set to NULL. An attacker\ncould possibly use this issue to obtain sensitive information. This\nissue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS.\n(CVE-2026-86409)\n\nStanislav Fort discovered that an HTTP proxy could trick libcurl into\nsending credentials to the proxy itself by responding to a CONNECT\nrequest with an unexpected authentication challenge. An attacker could\npossibly use this issue to obtain sensitive information.\n(CVE-2026-86414)\n\nStanislav Fort discovered that curl did not correctly handle HSTS\nentries when an includeSubDomains parent entry was imported before a\nlonger-lived child entry. An attacker could possibly use this issue to\ncause curl to use unencrypted HTTP connections. This issue only affected\nUbuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-87862)\n\nStanislav Fort discovered that curl did not properly handle HSTS max-age\nvalues that exceeded calendar time structure bounds. An attacker could\npossibly use this issue to cause a denial of service or data loss. This\nissue only affected Ubuntu 24.04 LTS. (CVE-2026-87863)\n\nStanislav Fort discovered that curl did not properly handle IMAP APPEND\ncommands when CURLOPT_CRLF was enabled, allowing overflow bytes to be\ninterpreted as pipelined commands. An authenticated attacker could\npossibly use this issue to inject arbitrary IMAP commands.\n(CVE-2026-87864)\n\nJoshua Rogers discovered that libcurl had a use-after-free vulnerability\nin the FTP wildcard matching code. An attacker could possibly use this\nissue to cause curl to crash, resulting in a denial of service, or\nexecute arbitrary code. (CVE-2026-92388)\n\nJoshua Rogers discovered that libcurl's TFTP state machine did not\nproperly validate transfer directions, allowing a malicious server to\nforce the client into transmit mode. An attacker could possibly use this\nissue to obtain sensitive information. (CVE-2026-92389)\n\nJoshua Rogers discovered that curl had a stack overflow vulnerability\nwhen processing deeply nested MIME structures. An attacker could\npossibly use this issue to cause curl to crash, resulting in a denial of\nservice. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS,\nUbuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-92391)\n\nJoshua Rogers discovered that libcurl could expose credentials in the\nURL returned by CURLINFO_EFFECTIVE_URL when credentials were retrieved\nfrom a .netrc file. An attacker could possibly use this issue to obtain\nsensitive information. This issue only affected Ubuntu 20.04 LTS, Ubuntu\n22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-94266)","dates":{"published":"2026-10-14T19:26:26.000Z","modified":"2026-10-20T22:56:55.557Z","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":"< 7.35.0-1ubuntu2.20+esm24","noFixRecorded":false,"fixedIn":null},{"text":"< 7.47.0-1ubuntu2.19+esm21","noFixRecorded":false,"fixedIn":null},{"text":"< 7.58.0-2ubuntu3.24+esm15","noFixRecorded":false,"fixedIn":null},{"text":"< 7.68.0-1ubuntu2.25+esm10","noFixRecorded":false,"fixedIn":null},{"text":"< 7.81.0-1ubuntu1.30","noFixRecorded":false,"fixedIn":null},{"text":"< 8.5.0-2ubuntu10.16","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 7.35.0-1ubuntu2.20+esm24 | < 7.47.0-1ubuntu2.19+esm21 | < 7.58.0-2ubuntu3.24+esm15 | < 7.68.0-1ubuntu2.25+esm10 | < 7.81.0-1ubuntu1.30 | < 8.5.0-2ubuntu10.16","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8932-1","label":"ubuntu.com/security/notices/USN-8932-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-86409","label":"ubuntu.com/security/CVE-2026-86409","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-86414","label":"ubuntu.com/security/CVE-2026-86414","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-87862","label":"ubuntu.com/security/CVE-2026-87862","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-87863","label":"ubuntu.com/security/CVE-2026-87863","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-87864","label":"ubuntu.com/security/CVE-2026-87864","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-92388","label":"ubuntu.com/security/CVE-2026-92388","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-92389","label":"ubuntu.com/security/CVE-2026-92389","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-92391","label":"ubuntu.com/security/CVE-2026-92391","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-94266","label":"ubuntu.com/security/CVE-2026-94266","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2026-86409","CVE-2026-86414","CVE-2026-87862","CVE-2026-87863","CVE-2026-87864","CVE-2026-92388","CVE-2026-92389","CVE-2026-92391","CVE-2026-94266"],"downstream":[],"duplicates":[],"related":["CVE-2026-86409","CVE-2026-86414","CVE-2026-87862","CVE-2026-87863","CVE-2026-87864","CVE-2026-92388","CVE-2026-92391","CVE-2026-94266"]},"timeline":[{"kind":"published","date":"2026-10-14T19:26:26.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-20T22:56:55.557Z","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":"2026-10-21T01:52:44.354Z","stale":false,"partial":false}}