{"id":"CVE-2022-27779","title":"libcurl wrongly allows cookies to be set for Top Level Domains (TLDs) if thehost name is provided with a trailing dot.curl can be told to receive and send cookies","summary":"libcurl wrongly allows cookies to be set for Top Level Domains (TLDs) if thehost name is provided with a trailing dot.curl can be told to receive and send cookies. curl's \"cookie engine\" can bebuilt with or without [Public Suffix List](h…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-201"],"vendor":"haxx","product":"curl","affected":["curl >= 7.82.0, < 7.83.1","hci_bootstrap_os","clustered_data_ontap","solidfire,_enterprise_sds_&_hci_storage_node","solidfire_&_hci_management_node","hci_compute_node","h410s_firmware","h700s_firmware","h500s_firmware","h300s_firmware","universal_forwarder >= 8.2.0, < 8.2.12","universal_forwarder >= 9.0.0, < 9.0.6","universal_forwarder = 9.1.0"],"patched":["curl 7.83.1","universal_forwarder 9.0.6"],"published":"2022-06-02","updated":"2026-10-14","sourceUpdated":"2026-10-14T17:17:37.080","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-27779","references":[{"url":"https://hackerone.com/reports/1553301","label":"support@hackerone.com"},{"url":"https://security.gentoo.org/glsa/202212-01","label":"support@hackerone.com"},{"url":"https://security.netapp.com/advisory/ntap-20220609-0009/","label":"support@hackerone.com"},{"url":"https://hackerone.com/reports/1553301","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202212-01","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20220609-0009/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.02725,"epssPercentile":0.85777,"ingestedAt":"2026-10-14T17:44:53.596Z","slug":"CVE-2022-27779","body":"## Overview\n\nlibcurl wrongly allows cookies to be set for Top Level Domains (TLDs) if thehost name is provided with a trailing dot.curl can be told to receive and send cookies. curl's \"cookie engine\" can bebuilt with or without [Public Suffix List](https://publicsuffix.org/)awareness. If PSL support not provided, a more rudimentary check exists to atleast prevent cookies from being set on TLDs. This check was broken if thehost name in the URL uses a trailing dot.This can allow arbitrary sites to set cookies that then would get sent to adifferent and unrelated site or domain.\n\n## Affected\n\n- `curl >= 7.82.0, < 7.83.1`\n- `hci_bootstrap_os`\n- `clustered_data_ontap`\n- `solidfire,_enterprise_sds_&_hci_storage_node`\n- `solidfire_&_hci_management_node`\n- `hci_compute_node`\n- `h410s_firmware`\n- `h700s_firmware`\n- `h500s_firmware`\n- `h300s_firmware`\n- `universal_forwarder >= 8.2.0, < 8.2.12`\n- `universal_forwarder >= 9.0.0, < 9.0.6`\n- `universal_forwarder = 9.1.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `curl 7.83.1`\n- `universal_forwarder 9.0.6`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.2,"likelihood":0.5,"exploitation":0,"ransomware":0},"changes":[]}