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CVE-2026-105326

2.5 · LOW

An argument injection flaw was found in CUPS.

Published Oct 5, 2026CWE-88EPSS 0.22%

Overview

CVE-2026-105326 is a low-severity vulnerability. It was published on October 5, 2026 and has a CVSS 3.1 base score of 2.5 (LOW).

This vulnerability has a CVSS 3.1 base score of 2.5, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refaccess.redhat.com/errata/RHSA-2026:77638Refaccess.redhat.com/security/cve/CVE-2026-105326Refbugzilla.redhat.com/show_bug.cgi?id=2545835GitHubgithub.com/OpenPrinting/cups/commit/1244ed9GitHubgithub.com/OpenPrinting/cups/commit/611d1bdGitHubgithub.com/OpenPrinting/cups/security/advisories/GHSA-r4wf-366f-f6g3

How CyberStrike helps

Frequently asked questions

What is CVE-2026-105326?

CVE-2026-105326 is a low-severity vulnerability. It was published on October 5, 2026 and has a CVSS 3.1 base score of 2.5 (LOW).

How severe is CVE-2026-105326?

This vulnerability has a CVSS 3.1 base score of 2.5, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-105326?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-105326?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-105326 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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