CVE-2026-105326 | BDVDB-2026-382949 Detail
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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.
Impact#
Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: local.
Weaknesses#
- CWE-88 Improper Neutralization of Argument Delimiters in a Command
References#
- https://access.redhat.com/errata/RHSA-2026:77638
- https://access.redhat.com/security/cve/CVE-2026-105326
- https://bugzilla.redhat.com/show_bug.cgi?id=2545835
- https://github.com/OpenPrinting/cups/commit/1244ed9
- https://github.com/OpenPrinting/cups/commit/611d1bd
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-r4wf-366f-f6g3
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.