PT-2026-30234 · Openprinting · Cups

Silverplate3 · Published 2026-03-31 · Updated 2026-06-08 · CVE-2026-27447

Positive Technologies (AI Summary)

CVSS v3.1

6.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

Name of the Vulnerable Software and Affected Versions OpenPrinting CUPS versions prior to 2.4.16

Description The CUPS daemon (cupsd) contains an authorization bypass caused by case-insensitive username comparison during authorization checks. This allows an unprivileged user to gain unauthorized access to restricted operations by using a username that differs only in case from an authorized user.

Recommendations Update the rootio-cups package to a fixed version.

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

BDU:2026-05580

CVE-2026-27447

ECHO-5DE4-11C3-45F3

OESA-2026-1932

OESA-2026-1933

OESA-2026-2018

OESA-2026-2019

OESA-2026-2020

OESA-2026-2021

OPENSUSE-SU-2026:10589-1

RHSA-2026:8814

USN-8405-1

Affected Products

Cups

References · 51

• https://github.com/OpenPrinting/cups/security/advisories/GHSA-v987-m8hp-phj9 · Vendor Advisory
• https://github.com/OpenPrinting/cups/commit/88516bf6d9e34cef7a64a704b856b837f70cd220 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-39316 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-27447 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10589-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-27447 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-34980 · Security Note
• https://ubuntu.com/security/CVE-2026-39316 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-34978 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2018 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-27447 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-27447 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2020 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-39314 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-34980 · Vendor Advisory