VDB
RHSA-2026:77638
RHSA-2026:77638
PUBLISHED
CVSS 2.5 LOW
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.
Risk Scores
CVSS 3.1
2.5
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | cups-devel-1:2.4.19-4.3.hum1@aarch64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-filesystem-1:2.4.19-4.3.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-1:2.4.19-4.3.hum1@aarch64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-ipptool-1:2.4.19-4.3.hum1@x86_64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-lpd-1:2.4.19-4.3.hum1@x86_64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-devel-1:2.4.19-4.3.hum1@x86_64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-client-1:2.4.19-4.3.hum1@aarch64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-ipptool-1:2.4.19-4.3.hum1@aarch64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-printerapp-1:2.4.19-4.3.hum1@aarch64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-libs-1:2.4.19-4.3.hum1@aarch64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-client-1:2.4.19-4.3.hum1@x86_64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-printerapp-1:2.4.19-4.3.hum1@x86_64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-1:2.4.19-4.3.hum1@src as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-1:2.4.19-4.3.hum1@x86_64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-filesystem-1:2.4.19-4.3.hum1@noarch@public-hummingbird-s390x-rpms as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-lpd-1:2.4.19-4.3.hum1@aarch64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-filesystem-1:2.4.19-4.3.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
| Red Hat | cups-libs-1:2.4.19-4.3.hum1@x86_64 as a component of Red Hat Hardened Images | 2.4.19-4.3.hum1 |
Timeline
- Oct 7, 2026 CVE Published
- Oct 22, 2026 CVE Updated
- Oct 22, 2026 Distribution Patch
- Oct 22, 2026 Distribution Patch
- Oct 22, 2026 Security Advisory
- Oct 22, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:77638 advisory
- https://access.redhat.com/security/cve/CVE-2026-105326 advisory
- https://access.redhat.com/security/updates/classification/ advisory
- https://images.redhat.com/ advisory
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_77638.json advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2545835 issue
- https://www.cve.org/CVERecord?id=CVE-2026-105326 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-105326 advisory
- https://github.com/OpenPrinting/cups/commit/1244ed9 advisory
- https://github.com/OpenPrinting/cups/commit/611d1bd advisory
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-r4wf-366f-f6g3 advisory