Hi,

The following vulnerability was published for cups.

CVE-2026-105326[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-105326
https://www.cve.org/CVERecord?id=CVE-2026-105326
[1] https://github.com/OpenPrinting/cups/security/advisories/GHSA-r4wf-366f-f6g3
[2] https://github.com/OpenPrinting/cups/commit/611d1bd3bdf832363832383567906a6d7fd6c47d

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore