CVE-2026-105326
lowAn argument injection flaw was found in CUPS.
An argument injection flaw was found in CUPS. When email notification is configured, the CUPS scheduler accepts printer subscription requests that supply a mailto notify-recipient-uri. The mailto notifier passes the recipient address to the configured sendmail program without ensuring it cannot be interpreted as command-line options. A remote attacker who can reach the CUPS service could supply a crafted recipient value starting with "-" to influence sendmail behavior. Successful exploitation depends on the installed mail transfer agent and CUPS network exposure, and may lead to execution of attacker-controlled commands with the privileges of the CUPS service user.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://access.redhat.com/errata/RHSA-2026:77638 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-105326 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2545835 secalert@redhat.com
- https://github.com/OpenPrinting/cups/commit/1244ed9 secalert@redhat.com
- https://github.com/OpenPrinting/cups/commit/611d1bd secalert@redhat.com
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-r4wf-366f-f6g3 secalert@redhat.com