CVEvulnerability

CVE-2026-55453

3.3 LOW Published 2026-10-15 Modified 2026-10-20 Official page ↗
Status
Analyzed
Published
2026-10-15
Last modified
2026-10-20
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.3 LOW — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Weaknesses
CWE-74, CWE-77, CWE-78

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 configurations

• openprinting cups (< 2.4.20)

Related

Weakness · CWE (3)

  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component weakness
  • CWE-77 Improper Neutralization of Special Elements used in a Command weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command weakness

References