CVE-2026-28228

{"id": "CVE-2026-28228", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "published": "2026-03-30T21:17:08.740", "references": [{"url": "https://github.com/OpenOLAT/OpenOLAT/security/advisories/GHSA-55qg-vvgj-ffh4", "tags": ["Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-1336"}]}], "descriptions": [{"lang": "en", "value": "OpenOlat is an open source web-based e-learning platform for teaching, learning, assessment and communication. Prior to versions 19.1.31, 20.1.18, and 20.2.5, an authenticated user with the Author role can inject Velocity directives into a reminder email template. When the reminder is processed (either triggered manually or via the daily cron job), the injected directives are evaluated server-side. By chaining Velocity's #set directive with Java reflection, an attacker can instantiate arbitrary Java classes such as java.lang.ProcessBuilder and execute operating system commands with the privileges of the Tomcat process (typically root in containerized deployments). This issue has been patched in versions 19.1.31, 20.1.18, and 20.2.5."}, {"lang": "es", "value": "OpenOlat es una plataforma de e-learning de c\u00f3digo abierto basada en web para la ense\u00f1anza, el aprendizaje, la evaluaci\u00f3n y la comunicaci\u00f3n. Antes de las versiones 19.1.31, 20.1.18 y 20.2.5, un usuario autenticado con el rol de Autor puede inyectar directivas de Velocity en una plantilla de correo electr\u00f3nico de recordatorio. Cuando el recordatorio es procesado (ya sea activado manualmente o a trav\u00e9s de la tarea cron diaria), las directivas inyectadas son evaluadas en el lado del servidor. Al encadenar la directiva #set de Velocity con la reflexi\u00f3n de Java, un atacante puede instanciar clases Java arbitrarias como java.lang.ProcessBuilder y ejecutar comandos del sistema operativo con los privilegios del proceso Tomcat (t\u00edpicamente root en despliegues en contenedores). Este problema ha sido parcheado en las versiones 19.1.31, 20.1.18 y 20.2.5."}], "lastModified": "2026-04-02T16:57:14.347", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:frentix:openolat:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "812979F6-BF3D-440D-BFA4-B7E04D232673", "versionEndExcluding": "19.1.31"}, {"criteria": "cpe:2.3:a:frentix:openolat:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F7FE8D10-D2FC-414F-83B6-BEC727F4CBEE", "versionEndExcluding": "20.1.18", "versionStartIncluding": "20.0.0"}, {"criteria": "cpe:2.3:a:frentix:openolat:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5A018E32-1524-4C2A-82B4-931269B86D1D", "versionEndExcluding": "20.2.5", "versionStartIncluding": "20.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}