CVE-2026-27807

{"id": "CVE-2026-27807", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.2}]}, "published": "2026-03-06T04:16:07.810", "references": [{"url": "https://github.com/MarkUsProject/Markus/releases/tag/v2.9.4", "tags": ["Product", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/MarkUsProject/Markus/security/advisories/GHSA-m9rx-85mx-q9h6", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-776"}]}], "descriptions": [{"lang": "en", "value": "MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.4, MarkUs allows course instructors to upload YAML files to create/update various entities (e.g., assignment settings). These YAML files are parsed with aliases enabled. This issue has been patched in version 2.9.4."}, {"lang": "es", "value": "MarkUs es una aplicaci\u00f3n web para la entrega y calificaci\u00f3n de tareas de estudiantes. Antes de la versi\u00f3n 2.9.4, MarkUs permite a los instructores del curso cargar archivos YAML para crear/actualizar varias entidades (por ejemplo, configuraciones de tareas). Estos archivos YAML se analizan con alias habilitados. Este problema ha sido parcheado en la versi\u00f3n 2.9.4."}], "lastModified": "2026-03-12T17:22:20.530", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:markusproject:markus:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "68B46CED-C806-4F2A-B1C6-727EE540E7A2", "versionEndExcluding": "2.9.4"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}