CVE-2021-40848
Estado: ModificadaAlta (7.8)—
In Mahara before 20.04.5, 20.10.3, 21.04.2, and 21.10.0, exported CSV files could contain characters that a spreadsheet program could interpret as a command, leading to execution of a malicious string locally on a device, aka CSV injection.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.99%
- Percentil entre todas las CVEs puntuadas: 61
- 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).
Tecnologías afectadas (1)
CWE
- CWE-1236
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2021-40848",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 6.8,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "MEDIUM",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 6.4,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 8.6,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": true
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2021-11-03T11:15:08.267",
"references": [
{
"url": "https://bugs.launchpad.net/mahara/+bug/1930471",
"tags": [
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://mahara.org/interaction/forum/topic.php?id=8950",
"tags": [
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://bugs.launchpad.net/mahara/+bug/1930471",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://mahara.org/interaction/forum/topic.php?id=8950",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-1236"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In Mahara before 20.04.5, 20.10.3, 21.04.2, and 21.10.0, exported CSV files could contain characters that a spreadsheet program could interpret as a command, leading to execution of a malicious string locally on a device, aka CSV injection."
},
{
"lang": "es",
"value": "En Mahara versiones anteriores a 20.04.5, 20.10.3, 21.04.2 y 21.10.0, los archivos CSV exportados podían contener caracteres que un programa de hoja de cálculo podía interpretar como un comando, conllevando a una ejecución de una cadena maliciosa localmente en un dispositivo, lo que se conoce como inyección CSV"
}
],
"lastModified": "2026-06-17T04:07:31.923",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mahara:mahara:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EE5F1CC6-E05D-4D9F-9543-7777025E4BAB",
"versionEndExcluding": "20.04.5"
},
{
"criteria": "cpe:2.3:a:mahara:mahara:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "54ED5D80-651C-4B0E-81AC-DB23BF6DFCF9",
"versionEndExcluding": "20.10.3",
"versionStartIncluding": "20.10.0"
},
{
"criteria": "cpe:2.3:a:mahara:mahara:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5DEE88DE-CD36-4F04-AB37-D155FABD12B8",
"versionEndExcluding": "21.04.2",
"versionStartIncluding": "21.04.0"
},
{
"criteria": "cpe:2.3:a:mahara:mahara:21.10.0:rc1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D72713FC-A263-498A-A57F-7E5D21EA7A33"
},
{
"criteria": "cpe:2.3:a:mahara:mahara:21.10.0:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5322D614-E2C7-4365-8E95-FFAC8BEBD3EF"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "cve@mitre.org"
}