CVE-2026-27447

{"id": "CVE-2026-27447", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-27447", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-06T18:49:46.413933Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 4.2, "exploitabilityScore": 0.5}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 4.2, "exploitabilityScore": 2.1}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "OpenPrinting", "product": "cups", "versions": [{"status": "affected", "version": "<= 2.4.16"}]}]}], "published": "2026-04-03T22:16:25.193", "references": [{"url": "https://github.com/OpenPrinting/cups/commit/88516bf6d9e34cef7a64a704b856b837f70cd220", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-v987-m8hp-phj9", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches."}, {"lang": "es", "value": "OpenPrinting CUPS es un sistema de impresi\u00f3n de c\u00f3digo abierto para Linux y otros sistemas operativos tipo Unix. En las versiones 2.4.16 y anteriores, el demonio de CUPS (cupsd) contiene una vulnerabilidad de omisi\u00f3n de autorizaci\u00f3n debido a una comparaci\u00f3n de nombres de usuario que no distingue entre may\u00fasculas y min\u00fasculas durante las comprobaciones de autorizaci\u00f3n. La vulnerabilidad permite a un usuario sin privilegios obtener acceso no autorizado a operaciones restringidas mediante el uso de un usuario con un nombre de usuario que difiere solo en may\u00fasculas y min\u00fasculas de un usuario autorizado. En el momento de la publicaci\u00f3n, no hay parches disponibles p\u00fablicamente."}], "lastModified": "2026-07-24T22:10:00.140", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8A2A4507-B2D7-43B8-B008-6EC2F5053FA9", "versionEndIncluding": "2.4.16"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}