CVE-2025-67848
A flaw was found in Moodle. This authentication bypass vulnerability allows suspended users to authenticate through the Learning Tools Interoperability (LTI) Provider. The issue arises from the LTI authentication handlers failing to enforce the user's suspension status, enabling unauthorized access to the system. This can lead to information disclosure or other unauthorized actions by users who should be restricted.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Puntuación base: 8.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.42%
- Percentil entre todas las CVEs puntuadas: 34
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1210Exploitation of Remote Serviceslateral movement75 % - Impacto principal
T1078.001Default Accountsstealth · persistence · privilege escalation · initial access85 % - Impacto secundario
T1005Data from Local Systemcollection70 %
Acceso remoto de red con PR:L a servicio LTI sin aplicar estado de suspensión (auth bypass); permite obtener credenciales válidas (T1078.001) y acceder a datos (T1005) como usuario autenticado no autorizado.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-280
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2025-67848",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-67848",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-02-04T04:55:50.922048Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "patrick@puiterwijk.org",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 8.1,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.2,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "patrick@puiterwijk.org",
"affectedData": [
{
"versions": [
{
"status": "affected",
"version": "4.1.0",
"lessThan": "4.1.22",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.4.0",
"lessThan": "4.4.12",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.5.0",
"lessThan": "4.5.8",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.0.0",
"lessThan": "5.0.4",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.1.0",
"lessThan": "5.1.1",
"versionType": "semver"
}
],
"packageName": "moodle",
"collectionURL": "https://github.com/moodle/moodle/",
"defaultStatus": "unaffected"
}
]
}
],
"published": "2026-02-03T11:15:54.107",
"references": [
{
"url": "https://access.redhat.com/security/cve/CVE-2025-67848",
"tags": [
"Third Party Advisory"
],
"source": "patrick@puiterwijk.org"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2423831",
"tags": [
"Issue Tracking",
"Third Party Advisory"
],
"source": "patrick@puiterwijk.org"
},
{
"url": "https://moodle.org/mod/forum/discuss.php?d=471298",
"tags": [
"Vendor Advisory"
],
"source": "patrick@puiterwijk.org"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "patrick@puiterwijk.org",
"description": [
{
"lang": "en",
"value": "CWE-280"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in Moodle. This authentication bypass vulnerability allows suspended users to authenticate through the Learning Tools Interoperability (LTI) Provider. The issue arises from the LTI authentication handlers failing to enforce the user's suspension status, enabling unauthorized access to the system. This can lead to information disclosure or other unauthorized actions by users who should be restricted."
},
{
"lang": "es",
"value": "Se encontró una falla en Moodle. Esta vulnerabilidad de omisión de autenticación permite a usuarios suspendidos autenticarse a través del Proveedor de Interoperabilidad de Herramientas de Aprendizaje (LTI). El problema surge de que los manejadores de autenticación LTI no aplican el estado de suspensión del usuario, lo que permite el acceso no autorizado al sistema. Esto puede llevar a la revelación de información o a otras acciones no autorizadas por parte de usuarios que deberían estar restringidos."
}
],
"lastModified": "2026-06-17T09:58:10.887",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A2DF3FD1-3A53-41D9-890B-F6DE973AB09C",
"versionEndExcluding": "4.1.22"
},
{
"criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "CED60CDC-8F12-481C-9ADD-8559860A2B3C",
"versionEndExcluding": "4.4.11",
"versionStartIncluding": "4.4.0"
},
{
"criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C0CC5CF8-4808-41A5-B8A1-B0D6C575E5DC",
"versionEndExcluding": "4.5.8",
"versionStartIncluding": "4.5.0"
},
{
"criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "06F81442-AEEB-483D-90A9-93DDBA5B95D6",
"versionEndExcluding": "5.0.4",
"versionStartIncluding": "5.0.0"
},
{
"criteria": "cpe:2.3:a:moodle:moodle:5.1.0:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "567FEE12-0E75-4F0C-B22E-E76990C80E1B"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "patrick@puiterwijk.org"
}