CVE-2026-28405

{"id": "CVE-2026-28405", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.0, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.1}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 2.3}]}, "published": "2026-03-05T21:16:21.707", "references": [{"url": "https://github.com/MarkUsProject/Markus/commit/55d74f2ddb72d2ec2f29aa2b4cb6b2da10755036", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/MarkUsProject/Markus/security/advisories/GHSA-p5pc-pxrj-3893", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.1, the courses/<:course_id>/assignments/<:assignment_id>/submissions/html_content route reads the contents of a student-submitted file and renders them without sanitization. This issue has been patched in version 2.9.1."}, {"lang": "es", "value": "MarkUs es una aplicaci\u00f3n web para la entrega y calificaci\u00f3n de tareas de estudiantes. Antes de la versi\u00f3n 2.9.1, la ruta courses/&lt;:course_id&gt;/assignments/&lt;:assignment_id&gt;/submissions/html_content lee el contenido de un archivo enviado por un estudiante y los renderiza sin sanitizaci\u00f3n. Este problema ha sido parcheado en la versi\u00f3n 2.9.1."}], "lastModified": "2026-03-10T19:53:01.670", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:markusproject:markus:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2D6B2B7B-F46C-4CEE-86D4-B25D3746747A", "versionEndExcluding": "2.9.1"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}