CVE-2026-102580
A flaw was found in Moodle. An authenticated attacker can supply an improperly validated audience class name to the Report Builder component, allowing arbitrary class instantiation. This vulnerability enables the unauthorized creation of internal program objects, which may result in unexpected application behavior.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Puntuación base: 4.3
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.24%
- Percentil entre todas las CVEs puntuadas: 13
- 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 movement65 % - Impacto principal
T1059Command and Scripting Interpreterexecution55 % - Impacto secundario
T1565.001Stored Data Manipulationimpact45 %
AV:N con autenticación (PR:L) indica explotación de servicio remoto. Instantiación arbitraria de clases puede permitir ejecución de código o manipulación de datos, aunque sin evidencia explícita del impacto final.
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-470
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-102580",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-102580",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-09-30T14:35:40.489112Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "patrick@puiterwijk.org",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 2.2,
"attackVector": "NETWORK",
"baseSeverity": "LOW",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "NONE",
"privilegesRequired": "HIGH",
"confidentialityImpact": "NONE"
},
"impactScore": 1.4,
"exploitabilityScore": 0.7
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 4.3,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 1.4,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "patrick@puiterwijk.org",
"affectedData": [
{
"versions": [
{
"status": "affected",
"version": "5.2.0",
"lessThan": "5.2.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.1.0",
"lessThan": "5.1.6",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.0.0",
"lessThan": "5.0.9",
"versionType": "semver"
},
{
"status": "affected",
"version": "0",
"lessThan": "4.5.13",
"versionType": "semver"
}
],
"packageName": "moodle",
"collectionURL": "https://git.moodle.org",
"defaultStatus": "unaffected"
}
]
}
],
"published": "2026-09-30T09:17:15.080",
"references": [
{
"url": "http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-89078",
"tags": [
"Patch"
],
"source": "patrick@puiterwijk.org"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-102580",
"tags": [
"Third Party Advisory"
],
"source": "patrick@puiterwijk.org"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543635",
"tags": [
"Issue Tracking",
"Third Party Advisory"
],
"source": "patrick@puiterwijk.org"
},
{
"url": "https://moodle.org/mod/forum/discuss.php?d=482498",
"tags": [
"Vendor Advisory"
],
"source": "patrick@puiterwijk.org"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "patrick@puiterwijk.org",
"description": [
{
"lang": "en",
"value": "CWE-470"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in Moodle. An authenticated attacker can supply an improperly validated audience class name to the Report Builder component, allowing arbitrary class instantiation. This vulnerability enables the unauthorized creation of internal program objects, which may result in unexpected application behavior."
}
],
"lastModified": "2026-10-01T14:36:39.630",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "99FF93A9-D754-4DE4-8D1B-B4C324CDA91A",
"versionEndExcluding": "4.5.13"
},
{
"criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "11BA4A97-DFEA-4813-B107-4BA4C0BD78DB",
"versionEndExcluding": "5.0.9",
"versionStartIncluding": "5.0.0"
},
{
"criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "37F95B02-166C-45BA-B537-21CB5084001F",
"versionEndExcluding": "5.1.6",
"versionStartIncluding": "5.1.0"
},
{
"criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EFDDCBAE-2DFF-45D6-A90A-2A9AC1743722",
"versionEndExcluding": "5.2.2",
"versionStartIncluding": "5.2.0"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "patrick@puiterwijk.org"
}