MEDIUM 4.8 Microsoft

CVE-2026-27447

OpenPrinting CUPS: Authorization bypass via case-insensitive group-member lookup

Microsoft Security Update 2026-Apr: OpenPrinting CUPS: Authorization bypass via case-insensitive group-member lookup

Affected Products

azl3 cups 2.4.16-1 on Azure Linux 3.0
cbl2 cups 2.3.3op2-11 on CBL Mariner 2.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27447
https://nvd.nist.gov/vuln/detail/CVE-2026-27447

Published: 2026-04-14 · Source: Microsoft · Feed updated: 2026-08-04

This medium severity vulnerability with a CVSS score of 4.8 was published on 2026-04-14 via Microsoft. Affected: azl3 cups 2.4.16-1 on Azure Linux 3.0, cbl2 cups 2.3.3op2-11 on CBL Mariner 2.0.

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