Incorrect Authorization Affecting cups package, versions <2.4.18-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.01% (3rd percentile)

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  • Snyk IDSNYK-ALPINE320-CUPS-16335724
  • published1 May 2026
  • disclosed3 Apr 2026

Introduced: 3 Apr 2026

CVE-2026-27447  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

Upgrade Alpine:3.20 cups to version 2.4.18-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cups package and not the cups package as distributed by Alpine. See How to fix? for Alpine:3.20 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1