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Thu, 15 Oct 2026 18:30:00 +0000
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Thu, 15 Oct 2026 17:30:00 +0000
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| Description | OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, the cupsdCreateJob option-string builder in scheduler/job.c maps attacker-controlled destination-uri and pre-dial-string values from a configured fax queue to the phone and faxPrefix options. Unlike ordinary IPP job attributes, these mapped fax values bypass the control-character sanitizer and are copied directly into the filter options argument. A user permitted to submit a job can therefore inject control characters into the downstream option stream. The reporter states that a downstream fax filter passing these values to a shell or modem command could execute code as lp, while the maintainer states that CUPS has no confidentiality or integrity impact because the only known code-executing filter is optional Foomatic and addressed separately, leaving possible disruption of the affected queue. This issue is fixed in version 2.4.20. | |
| Title | CUPS fax option values bypass the CVE-2026-34980 control-character sanitizer (incomplete fix) | |
| Weaknesses | CWE-150 CWE-93 CWE-94 |
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cvssV3_1
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Subscriptions
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-10-15T17:49:26.673Z
Reserved: 2026-06-16T22:10:37.608Z
Link: CVE-2026-55467
Updated: 2026-10-15T17:49:18.871Z
Status : Received
Published: 2026-10-15T18:17:27.833
Modified: 2026-10-15T18:17:27.833
Link: CVE-2026-55467
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OpenCVE Enrichment
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