CVE-2017-6922
Status: ModifiedMedium (6.5)—
In Drupal core 8.x prior to 8.3.4 and Drupal core 7.x prior to 7.56; Private files that have been uploaded by an anonymous user but not permanently attached to content on the site should only be visible to the anonymous user that uploaded them, rather than all anonymous users. Drupal core did not previously provide this protection, allowing an access bypass vulnerability to occur. This issue is mitigated by the fact that in order to be affected, the site must allow anonymous users to upload files into a private file system.
CVSS
- Version: 3.0
- Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Base score: 6.5
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 1.95%
- Percentile among all scored CVEs: 80
- Score date: 10/18/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (2)
CWEs
- CWE-552
References
- http://www.securityfocus.com/bid/99219
- http://www.securitytracker.com/id/1038781
- https://www.debian.org/security/2017/dsa-3897
- https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple
- http://www.securityfocus.com/bid/99219
- http://www.securitytracker.com/id/1038781
- https://www.debian.org/security/2017/dsa-3897
- https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple
Raw JSON (NVD)
Show
{
"id": "CVE-2017-6922",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 4,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
"authentication": "SINGLE",
"integrityImpact": "NONE",
"accessComplexity": "LOW",
"availabilityImpact": "NONE",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 8,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.0",
"baseScore": 6.5,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 3.6,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "mlhess@drupal.org",
"affectedData": [
{
"vendor": "Drupal",
"product": "Drupal Core",
"versions": [
{
"status": "affected",
"version": "Drupal 8",
"lessThan": "8.3.3",
"versionType": "custom"
},
{
"status": "affected",
"version": "Drupal 7",
"lessThan": "7.55",
"versionType": "custom"
}
]
}
]
}
],
"published": "2019-01-22T15:29:00.223",
"references": [
{
"url": "http://www.securityfocus.com/bid/99219",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "mlhess@drupal.org"
},
{
"url": "http://www.securitytracker.com/id/1038781",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "mlhess@drupal.org"
},
{
"url": "https://www.debian.org/security/2017/dsa-3897",
"tags": [
"Third Party Advisory"
],
"source": "mlhess@drupal.org"
},
{
"url": "https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "mlhess@drupal.org"
},
{
"url": "http://www.securityfocus.com/bid/99219",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://www.securitytracker.com/id/1038781",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.debian.org/security/2017/dsa-3897",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-552"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In Drupal core 8.x prior to 8.3.4 and Drupal core 7.x prior to 7.56; Private files that have been uploaded by an anonymous user but not permanently attached to content on the site should only be visible to the anonymous user that uploaded them, rather than all anonymous users. Drupal core did not previously provide this protection, allowing an access bypass vulnerability to occur. This issue is mitigated by the fact that in order to be affected, the site must allow anonymous users to upload files into a private file system."
},
{
"lang": "es",
"value": "En Drupal core, en las versiones 8.x anteriores a la 8.3.4 y en las 7.x anteriores a la 7.56, los archivos privados subidos por un usuario anónimo que no estén conectados al contenido del sitio deberían ser visibles solo para el mismo usuario anónimo que los subió, en lugar de todos los usuarios anónimos. Anteriormente, Drupal core no disponía de esta protección, permitiendo que ocurriera una vulnerabilidad de omisión de acceso. Este problema se mitiga por el hecho de que, para que se vea afectado, el sitio deberá permitir a los usuarios anónimos subir archivos a un sistema de archivos privado."
}
],
"lastModified": "2026-06-17T01:23:20.383",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "67B5E690-BB08-4EB3-BD48-5301A360187C",
"versionEndExcluding": "7.56",
"versionStartIncluding": "7.0"
},
{
"criteria": "cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B0C572FD-C76D-4714-85A3-5CFF9F292C2C",
"versionEndExcluding": "8.3.4",
"versionStartIncluding": "8.0.0"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"
},
{
"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "mlhess@drupal.org"
}