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CVE PROGRAM SOURCE RECORD3.3 Low

CVE-2026-55453

CUPS ipp backend status-line injection can update queue PPD and lead to conditional RCE as lp via foomatic-rip

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Status
Published
Published
Updated
Assigning organization
GitHub_M

Description

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, the backend/ipp.c quote_string() function preserves carriage-return and line-feed characters in a remote printer-controlled marker-message before report_attr() writes the value to the scheduler status stream. The scheduler can parse an injected newline as a separate PPD: control line and persist an attacker-selected PPD keyword. The reporter demonstrated that a later print job on a Foomatic-backed queue could consume an injected FoomaticRIPCommandLine value and execute in the filter context as lp. This issue is fixed in version 2.4.20.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

OpenPrinting cups

  • < 2.4.20affected

References