CVE-2026-27447

Published Apr 3, 2026

Last updated 2 months ago

Overview

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.
Source
security-advisories@github.com
NVD status
Analyzed
Products
cups

Risk scores

CVSS 3.1

Type
Primary
Base score
6.3
Impact score
4.2
Exploitability score
2.1
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
Severity
MEDIUM

Weaknesses

security-advisories@github.com
CWE-863

Social media

Hype score
Not currently trending

Configurations