CVE-2026-34978

Name
CVE-2026-34978
Description
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. 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/security/advisories/GHSA-f53q-7mxp-9gcr

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