{"id":"USN-8932-1","summary":"curl vulnerabilities","details":"Stanislav 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)","modified":"2026-10-17T13:13:07.936081960Z","published":"2026-10-14T19:26:26Z","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","UBUNTU-CVE-2026-86409","UBUNTU-CVE-2026-86414","UBUNTU-CVE-2026-87862","UBUNTU-CVE-2026-87863","UBUNTU-CVE-2026-87864","UBUNTU-CVE-2026-92388","UBUNTU-CVE-2026-92389","UBUNTU-CVE-2026-92391","UBUNTU-CVE-2026-94266"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8932-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-86409"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-86414"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-87862"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-87863"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-87864"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-92388"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-92389"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-92391"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-94266"}],"affected":[{"package":{"name":"curl","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/curl?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.35.0-1ubuntu2.20+esm24"}]}],"versions":["7.32.0-1ubuntu1","7.33.0-1ubuntu1","7.34.0-1ubuntu1","7.35.0-1ubuntu1","7.35.0-1ubuntu2","7.35.0-1ubuntu2.1","7.35.0-1ubuntu2.2","7.35.0-1ubuntu2.3","7.35.0-1ubuntu2.5","7.35.0-1ubuntu2.6","7.35.0-1ubuntu2.7","7.35.0-1ubuntu2.8","7.35.0-1ubuntu2.9","7.35.0-1ubuntu2.10","7.35.0-1ubuntu2.11","7.35.0-1ubuntu2.12","7.35.0-1ubuntu2.13","7.35.0-1ubuntu2.14","7.35.0-1ubuntu2.15","7.35.0-1ubuntu2.16","7.35.0-1ubuntu2.17","7.35.0-1ubuntu2.19","7.35.0-1ubuntu2.20","7.35.0-1ubuntu2.20+esm2","7.35.0-1ubuntu2.20+esm3","7.35.0-1ubuntu2.20+esm4","7.35.0-1ubuntu2.20+esm5","7.35.0-1ubuntu2.20+esm6","7.35.0-1ubuntu2.20+esm7","7.35.0-1ubuntu2.20+esm8","7.35.0-1ubuntu2.20+esm9","7.35.0-1ubuntu2.20+esm10","7.35.0-1ubuntu2.20+esm11","7.35.0-1ubuntu2.20+esm12","7.35.0-1ubuntu2.20+esm13","7.35.0-1ubuntu2.20+esm14","7.35.0-1ubuntu2.20+esm15","7.35.0-1ubuntu2.20+esm16","7.35.0-1ubuntu2.20+esm17","7.35.0-1ubuntu2.20+esm18","7.35.0-1ubuntu2.20+esm19","7.35.0-1ubuntu2.20+esm20","7.35.0-1ubuntu2.20+esm21","7.35.0-1ubuntu2.20+esm22","7.35.0-1ubuntu2.20+esm23"],"ecosystem_specific":{"binaries":[{"binary_name":"curl","binary_version":"7.35.0-1ubuntu2.20+esm24"},{"binary_name":"libcurl3","binary_version":"7.35.0-1ubuntu2.20+esm24"},{"binary_name":"libcurl3-gnutls","binary_version":"7.35.0-1ubuntu2.20+esm24"},{"binary_version":"7.35.0-1ubuntu2.20+esm24","binary_name":"libcurl3-nss"}],"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8932-1.json","cves_map":{"cves":[],"ecosystem":"Ubuntu:Pro:14.04:LTS"}}},{"package":{"name":"curl","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/curl?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.47.0-1ubuntu2.19+esm21"}]}],"versions":["7.43.0-1ubuntu2","7.45.0-1ubuntu1","7.46.0-1ubuntu1","7.47.0-1ubuntu1","7.47.0-1ubuntu2","7.47.0-1ubuntu2.1","7.47.0-1ubuntu2.2","7.47.0-1ubuntu2.3","7.47.0-1ubuntu2.4","7.47.0-1ubuntu2.5","7.47.0-1ubuntu2.6","7.47.0-1ubuntu2.7","7.47.0-1ubuntu2.8","7.47.0-1ubuntu2.9","7.47.0-1ubuntu2.11","7.47.0-1ubuntu2.12","7.47.0-1ubuntu2.13","7.47.0-1ubuntu2.14","7.47.0-1ubuntu2.15","7.47.0-1ubuntu2.16","7.47.0-1ubuntu2.18","7.47.0-1ubuntu2.19","7.47.0-1ubuntu2.19+esm1","7.47.0-1ubuntu2.19+esm2","7.47.0-1ubuntu2.19+esm3","7.47.0-1ubuntu2.19+esm4","7.47.0-1ubuntu2.19+esm5","7.47.0-1ubuntu2.19+esm6","7.47.0-1ubuntu2.19+esm7","7.47.0-1ubuntu2.19+esm8","7.47.0-1ubuntu2.19+esm9","7.47.0-1ubuntu2.19+esm10","7.47.0-1ubuntu2.19+esm11","7.47.0-1ubuntu2.19+esm12","7.47.0-1ubuntu2.19+esm13","7.47.0-1ubuntu2.19+esm15","7.47.0-1ubuntu2.19+esm16","7.47.0-1ubuntu2.19+esm17","7.47.0-1ubuntu2.19+esm18","7.47.0-1ubuntu2.19+esm20"],"ecosystem_specific":{"binaries":[{"binary_name":"curl","binary_version":"7.47.0-1ubuntu2.19+esm21"},{"binary_version":"7.47.0-1ubuntu2.19+esm21","binary_name":"libcurl3"},{"binary_name":"libcurl3-gnutls","binary_version":"7.47.0-1ubuntu2.19+esm21"},{"binary_name":"libcurl3-nss","binary_version":"7.47.0-1ubuntu2.19+esm21"}],"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8932-1.json"}},{"package":{"name":"curl","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/curl?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.58.0-2ubuntu3.24+esm15"}]}],"versions":["7.55.1-1ubuntu2","7.55.1-1ubuntu2.1","7.57.0-1ubuntu1","7.58.0-2ubuntu1","7.58.0-2ubuntu2","7.58.0-2ubuntu3","7.58.0-2ubuntu3.1","7.58.0-2ubuntu3.2","7.58.0-2ubuntu3.3","7.58.0-2ubuntu3.5","7.58.0-2ubuntu3.6","7.58.0-2ubuntu3.7","7.58.0-2ubuntu3.8","7.58.0-2ubuntu3.9","7.58.0-2ubuntu3.10","7.58.0-2ubuntu3.12","7.58.0-2ubuntu3.13","7.58.0-2ubuntu3.14","7.58.0-2ubuntu3.15","7.58.0-2ubuntu3.16","7.58.0-2ubuntu3.17","7.58.0-2ubuntu3.18","7.58.0-2ubuntu3.19","7.58.0-2ubuntu3.20","7.58.0-2ubuntu3.21","7.58.0-2ubuntu3.22","7.58.0-2ubuntu3.23","7.58.0-2ubuntu3.24","7.58.0-2ubuntu3.24+esm1","7.58.0-2ubuntu3.24+esm2","7.58.0-2ubuntu3.24+esm3","7.58.0-2ubuntu3.24+esm4","7.58.0-2ubuntu3.24+esm5","7.58.0-2ubuntu3.24+esm7","7.58.0-2ubuntu3.24+esm8","7.58.0-2ubuntu3.24+esm9","7.58.0-2ubuntu3.24+esm10","7.58.0-2ubuntu3.24+esm11","7.58.0-2ubuntu3.24+esm12","7.58.0-2ubuntu3.24+esm14"],"ecosystem_specific":{"binaries":[{"binary_name":"curl","binary_version":"7.58.0-2ubuntu3.24+esm15"},{"binary_version":"7.58.0-2ubuntu3.24+esm15","binary_name":"libcurl3-gnutls"},{"binary_name":"libcurl3-nss","binary_version":"7.58.0-2ubuntu3.24+esm15"},{"binary_name":"libcurl4","binary_version":"7.58.0-2ubuntu3.24+esm15"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[],"ecosystem":"Ubuntu:Pro:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8932-1.json"}},{"package":{"name":"curl","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/curl?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.68.0-1ubuntu2.25+esm10"}]}],"versions":["7.65.3-1ubuntu3","7.65.3-1ubuntu4","7.66.0-1ubuntu1","7.67.0-2ubuntu1","7.68.0-1ubuntu1","7.68.0-1ubuntu2","7.68.0-1ubuntu2.1","7.68.0-1ubuntu2.2","7.68.0-1ubuntu2.4","7.68.0-1ubuntu2.5","7.68.0-1ubuntu2.6","7.68.0-1ubuntu2.7","7.68.0-1ubuntu2.10","7.68.0-1ubuntu2.11","7.68.0-1ubuntu2.12","7.68.0-1ubuntu2.13","7.68.0-1ubuntu2.14","7.68.0-1ubuntu2.15","7.68.0-1ubuntu2.16","7.68.0-1ubuntu2.18","7.68.0-1ubuntu2.19","7.68.0-1ubuntu2.20","7.68.0-1ubuntu2.21","7.68.0-1ubuntu2.22","7.68.0-1ubuntu2.23","7.68.0-1ubuntu2.24","7.68.0-1ubuntu2.25","7.68.0-1ubuntu2.25+esm2","7.68.0-1ubuntu2.25+esm3","7.68.0-1ubuntu2.25+esm4","7.68.0-1ubuntu2.25+esm5","7.68.0-1ubuntu2.25+esm6","7.68.0-1ubuntu2.25+esm7","7.68.0-1ubuntu2.25+esm9"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"curl","binary_version":"7.68.0-1ubuntu2.25+esm10"},{"binary_name":"libcurl3-gnutls","binary_version":"7.68.0-1ubuntu2.25+esm10"},{"binary_version":"7.68.0-1ubuntu2.25+esm10","binary_name":"libcurl3-nss"},{"binary_version":"7.68.0-1ubuntu2.25+esm10","binary_name":"libcurl4"}]},"database_specific":{"cves_map":{"cves":[],"ecosystem":"Ubuntu:Pro:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8932-1.json"}},{"package":{"name":"curl","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/curl?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.81.0-1ubuntu1.30"}]}],"versions":["7.74.0-1.3ubuntu2","7.74.0-1.3ubuntu3","7.80.0-3","7.81.0-1","7.81.0-1ubuntu1.1","7.81.0-1ubuntu1.2","7.81.0-1ubuntu1.3","7.81.0-1ubuntu1.4","7.81.0-1ubuntu1.6","7.81.0-1ubuntu1.7","7.81.0-1ubuntu1.8","7.81.0-1ubuntu1.10","7.81.0-1ubuntu1.11","7.81.0-1ubuntu1.13","7.81.0-1ubuntu1.14","7.81.0-1ubuntu1.15","7.81.0-1ubuntu1.16","7.81.0-1ubuntu1.17","7.81.0-1ubuntu1.18","7.81.0-1ubuntu1.19","7.81.0-1ubuntu1.20","7.81.0-1ubuntu1.21","7.81.0-1ubuntu1.22","7.81.0-1ubuntu1.23","7.81.0-1ubuntu1.24","7.81.0-1ubuntu1.25","7.81.0-1ubuntu1.26","7.81.0-1ubuntu1.27","7.81.0-1ubuntu1.29"],"ecosystem_specific":{"binaries":[{"binary_name":"curl","binary_version":"7.81.0-1ubuntu1.30"},{"binary_version":"7.81.0-1ubuntu1.30","binary_name":"libcurl3-gnutls"},{"binary_version":"7.81.0-1ubuntu1.30","binary_name":"libcurl3-nss"},{"binary_name":"libcurl4","binary_version":"7.81.0-1ubuntu1.30"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8932-1.json","cves_map":{"cves":[],"ecosystem":"Ubuntu:22.04:LTS"}}},{"package":{"name":"curl","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/curl?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.5.0-2ubuntu10.16"}]}],"versions":["8.2.1-1ubuntu3","8.2.1-1ubuntu3.1","8.4.0-2ubuntu1","8.5.0-2ubuntu1","8.5.0-2ubuntu2","8.5.0-2ubuntu8","8.5.0-2ubuntu9","8.5.0-2ubuntu10","8.5.0-2ubuntu10.1","8.5.0-2ubuntu10.2","8.5.0-2ubuntu10.3","8.5.0-2ubuntu10.4","8.5.0-2ubuntu10.5","8.5.0-2ubuntu10.6","8.5.0-2ubuntu10.7","8.5.0-2ubuntu10.8","8.5.0-2ubuntu10.9","8.5.0-2ubuntu10.10","8.5.0-2ubuntu10.11","8.5.0-2ubuntu10.12","8.5.0-2ubuntu10.13","8.5.0-2ubuntu10.15"],"ecosystem_specific":{"availability":"No subscription 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