{"id":"CVE-2026-3184","title":"A flaw was found in util-linux","summary":"A flaw was found in util-linux. Improper hostname canonicalization in the `login(1)` utility, when invoked with the `-h` option, can modify the supplied remote hostname before setting `PAM_RHOST`. A remote attacker could exploit this by …","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-289"],"vendor":"kernel","product":"util-linux","affected":["util-linux","hardened_images"],"published":"2026-04-03","updated":"2026-07-21","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-3184","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:7180","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-3184","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2442570","label":"secalert@redhat.com"}],"tags":["nvd"],"epss":0.00436,"epssPercentile":0.37275,"ingestedAt":"2026-07-21T19:53:39.782Z","slug":"CVE-2026-3184","body":"## Overview\n\nA flaw was found in util-linux. Improper hostname canonicalization in the `login(1)` utility, when invoked with the `-h` option, can modify the supplied remote hostname before setting `PAM_RHOST`. A remote attacker could exploit this by providing a specially crafted hostname, potentially bypassing host-based Pluggable Authentication Modules (PAM) access control rules that rely on fully qualified domain names. This could lead to unauthorized access.\n\n## Affected\n\n- `util-linux`\n- `hardened_images`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}