VULNERABILITY INTELLIGENCE

CVE-2026-27447

CVSS score4.8 MEDIUM
EPSS probability0.29%
CISA KEVNot currently listed
Published2026-04-03
Last modified2026-07-24
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N

Description

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.

Weakness classification

  • CWE-863: Incorrect Authorization

Primary references