CVE-2026-55453

{"id": "CVE-2026-55453", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-55453", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-15T20:24:45.854455Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.3, "attackVector": "LOCAL", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 1.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "OpenPrinting", "product": "cups", "versions": [{"status": "affected", "version": "< 2.4.20"}]}]}], "published": "2026-10-15T18:17:27.677", "references": [{"url": "https://github.com/OpenPrinting/cups/commit/806e1b483096c51d59432468f4afdd7387d81dd7", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OpenPrinting/cups/commit/d41cf0616688721e9d435d54118c4c8a36ed596a", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OpenPrinting/cups/releases/tag/v2.4.20", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-7hqf-mfhx-7r3v", "tags": ["Exploit", "Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-74"}, {"lang": "en", "value": "CWE-77"}, {"lang": "en", "value": "CWE-78"}]}], "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 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."}], "lastModified": "2026-10-20T19:38:09.283", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2DB4F8BB-D97C-48D4-9B6F-F18BF8CC6E83", "versionEndExcluding": "2.4.20"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}