CVE intelligence

CVE-2026-87876

Vulnerability intelligence

Published Sep 9, 2026Sources checked Sep 15, 2026

3.0LOWCVSS out of 10

What this means

Review the available evidence

CVE-2026-87876 and is rated Low severity with a CVSS score of 3.0. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

CISA KEVNot listedBased on the latest collected catalog

EPSS0.4%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-87876?

Two case-insensitive comparisons on request-derived usernames outside the main authorization path in CUPS's scheduler (printer ACL validation and private-attribute filtering) could allow bypass of username-based access controls in certain configurations.