CVE-2026-27447

Name
CVE-2026-27447
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.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security-advisories@github.com https://github.com/OpenPrinting/cups/commit/88516bf6d9e34cef7a64a704b856b837f70cd220
security-advisories@github.com https://github.com/OpenPrinting/cups/security/advisories/GHSA-v987-m8hp-phj9

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:* cups >= None <= 2.4.16

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
cups edge-main 2.4.18-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
cups edge-main 2.4.16-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.13-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.12-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.11-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.10-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.10-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.9-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.8-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.7-r4 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.7-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.7-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.7-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.6-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.4-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.3-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.2-r7 None possibly vulnerable
cups edge-main 2.4.2-r6 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.2-r5 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.2-r4 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.2-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.2-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.4.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups edge-main 2.3.3-r0 None possibly vulnerable
cups edge-main 2.2.12-r0 None possibly vulnerable
cups edge-main 2.2.10-r0 None possibly vulnerable
cups 3.23-main 2.4.18-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
cups 3.23-main 2.4.16-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups 3.23-main 2.4.13-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups 3.22-main 2.4.18-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
cups 3.22-main 2.4.16-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups 3.22-main 2.4.11-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups 3.22-main 2.4.10-r1 None possibly vulnerable
cups 3.22-main 2.4.9-r0 None possibly vulnerable
cups 3.22-main 2.4.7-r0 None possibly vulnerable
cups 3.22-main 2.4.2-r7 None possibly vulnerable
cups 3.22-main 2.4.2-r0 None possibly vulnerable
cups 3.22-main 2.3.3-r0 None possibly vulnerable
cups 3.22-main 2.2.12-r0 None possibly vulnerable
cups 3.22-main 2.2.10-r0 None possibly vulnerable
cups 3.21-main 2.4.18-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
cups 3.21-main 2.4.16-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups 3.21-main 2.4.11-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups 3.21-main 2.4.10-r1 None possibly vulnerable
cups 3.21-main 2.4.9-r0 None possibly vulnerable
cups 3.21-main 2.4.7-r0 None possibly vulnerable
cups 3.21-main 2.4.2-r7 None possibly vulnerable
cups 3.21-main 2.4.2-r0 None possibly vulnerable
cups 3.21-main 2.3.3-r0 None possibly vulnerable
cups 3.21-main 2.2.12-r0 None possibly vulnerable
cups 3.21-main 2.2.10-r0 None possibly vulnerable
cups 3.20-main 2.4.18-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
cups 3.20-main 2.4.16-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups 3.20-main 2.4.9-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups 3.20-main 2.4.9-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups 3.20-main 2.4.8-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups 3.20-main 2.4.7-r0 None possibly vulnerable
cups 3.20-main 2.4.2-r7 None possibly vulnerable
cups 3.20-main 2.4.2-r0 None possibly vulnerable
cups 3.20-main 2.3.3-r0 None possibly vulnerable
cups 3.20-main 2.2.12-r0 None possibly vulnerable
cups 3.20-main 2.2.10-r0 None possibly vulnerable
cups 3.19-main 2.4.9-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups 3.19-main 2.4.9-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups 3.19-main 2.4.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
cups 3.19-main 2.4.2-r7 None possibly vulnerable
cups 3.19-main 2.4.2-r0 None possibly vulnerable
cups 3.19-main 2.3.3-r0 None possibly vulnerable
cups 3.19-main 2.2.12-r0 None possibly vulnerable
cups 3.19-main 2.2.10-r0 None possibly vulnerable