{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-55467",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-16T22:10:37.608Z",
        "datePublished": "2026-10-15T17:08:24.374Z",
        "dateUpdated": "2026-10-15T17:49:26.673Z"
    },
    "containers": {
        "cna": {
            "title": "CUPS fax option values bypass the CVE-2026-34980 control-character sanitizer (incomplete fix)",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-93",
                            "lang": "en",
                            "description": "CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-94",
                            "lang": "en",
                            "description": "CWE-94: Improper Control of Generation of Code ('Code Injection')",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-150",
                            "lang": "en",
                            "description": "CWE-150: Improper Neutralization of Escape, Meta, or Control Sequences",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "LOCAL",
                        "availabilityImpact": "LOW",
                        "baseScore": 2.5,
                        "baseSeverity": "LOW",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-69qc-prxg-h2c7",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-69qc-prxg-h2c7"
                },
                {
                    "name": "https://github.com/OpenPrinting/cups/commit/0cf4e7814d6810ed3c454222bce3aa342d541681",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OpenPrinting/cups/commit/0cf4e7814d6810ed3c454222bce3aa342d541681"
                },
                {
                    "name": "https://github.com/OpenPrinting/cups/commit/a9e7e7a3a019d0fa063d29409d3f82e4c6d5a008",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OpenPrinting/cups/commit/a9e7e7a3a019d0fa063d29409d3f82e4c6d5a008"
                },
                {
                    "name": "https://github.com/OpenPrinting/cups/releases/tag/v2.4.20",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OpenPrinting/cups/releases/tag/v2.4.20"
                }
            ],
            "affected": [
                {
                    "vendor": "OpenPrinting",
                    "product": "cups",
                    "versions": [
                        {
                            "version": "< 2.4.20",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-15T17:08:24.374Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "source": {
                "advisory": "GHSA-69qc-prxg-h2c7",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-69qc-prxg-h2c7",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-15T17:49:04.144102Z",
                                "id": "CVE-2026-55467",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-15T17:49:26.673Z"
                }
            }
        ]
    }
}