Overview
- Description
- Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, webauthn tokens were not deleted after a user has been deleted. If a victim reused an earlier used username, the previous user could gain access to their account. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 9.8
- Impact score
- 5.9
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity
- CRITICAL
CVSS 2.0
- Type
- Primary
- Base score
- 7.5
- Impact score
- 6.4
- Exploitability score
- 10
- Vector string
- AV:N/AC:L/Au:N/C:P/I:P/A:P
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7D4E2A1A-C03E-4B91-87B6-6A8652B284F7",
"versionEndExcluding": "19.0.13"
},
{
"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9CF8A48F-A16D-4C5F-B098-F92F3D361FA9",
"versionEndExcluding": "20.0.11",
"versionStartIncluding": "20.0.0"
},
{
"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D490C8D8-910E-44A1-9A8E-2F892D35D6CF",
"versionEndExcluding": "21.0.3",
"versionStartIncluding": "21.0.0"
}
],
"operator": "OR"
}
]
}
]