CVE-2026-3184

5.3 mediumEPSS 0.4%

Medium (5.3). EPSS 0.4% chance of exploitation in the next 30 days.

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 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.

Severity

CVSS 3.1

5.3 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 38% of CVEs (scores of 2026-10-31)
CWE: CWE-289
Published: 2026-04-03
Modified: 2026-08-31
Record from: the NVD, synced 2026-10-19

Affected

kernel:util-linux
redhat:hardened_images

References

https://access.redhat.com/errata/RHSA-2026:7180
https://access.redhat.com/security/cve/CVE-2026-3184
https://bugzilla.redhat.com/show_bug.cgi?id=2442570

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