{"id":"CVE-2026-105326","published":"2026-10-05T19:17:16.393","lastModified":"2026-10-07T18:17:15.577","description":"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.","cvssScore":2.5,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","cwes":["CWE-88"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:77638","tags":[]},{"url":"https://access.redhat.com/security/cve/CVE-2026-105326","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545835","tags":[]},{"url":"https://github.com/OpenPrinting/cups/commit/1244ed9","tags":[]},{"url":"https://github.com/OpenPrinting/cups/commit/611d1bd","tags":[]},{"url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-r4wf-366f-f6g3","tags":[]}],"exploitRefs":[{"url":"https://github.com/OpenPrinting/cups/commit/1244ed9","tags":[]},{"url":"https://github.com/OpenPrinting/cups/commit/611d1bd","tags":[]},{"url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-r4wf-366f-f6g3","tags":[]}],"hasPoc":true,"ai":null}