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CVE-2026-55480 is a symlink-following vulnerability in the CUPS copy_model() function. When adding or modifying a printer using a model PPD, the root-running cupsd scheduler opens a predictable temporary file without O_EXCL or O_NOFOLLOW. A local process with lp-group access can pre-create a symbolic link at that location, redirecting the scheduler's write to an arbitrary root-owned file. Successful exploitation can truncate or overwrite the target, potentially enabling root privilege escalation or denial of service.
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A local arbitrary-file-write vulnerability in the CUPS scheduler's copy_model() function. When adding or modifying a printer with a model PPD, the root-running scheduler opens a predictable temporary file without O_EXCL or O_NOFOLLOW. A process with lp-group access can plant a symlink and cause root-owned files to be truncated or overwritten. The reference assigns a medium CVSS v3.1 score of 5.7, with high integrity and availability impacts. The upstream fix is included in CUPS 2.4.20, while fixes for the listed Amazon Linux cups packages remain pending.
A critical vulnerability affecting the cups package on Debian Linux. The plugin reports a CVSS v3 base score of 9.8, indicating network accessibility, no required privileges or user interaction, and high confidentiality, integrity, and availability impacts. The underlying flaw is not described. The vendor indicates it will not be patched, and no known solution or exploit is available.
A CUPS vulnerability included in Slackware advisory SSA:2026-278-01. Updated packages are available for Slackware Linux 15.0 and -current. The content does not provide vulnerability-specific technical details or impacts.
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Cross-references every affected SKU, including bundled OEM variants.
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