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GitHub_MCVE-2021-32726

HistoryJul 12, 2021 - 8:15 p.m.

CVE-2021-32726

2021-07-1220:15:10

CWE-708

CWE-287

GitHub_M

web.nvd.nist.gov

145

nextcloud

server

unauthorized access

data storage

cve-2021-32726

webauthn tokens

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.2

Confidence

High

EPSS

0.003

Percentile

71.2%

JSON

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.

Affected configurations

Nvd

Vulners

Node

nextcloudnextcloud_serverRange<19.0.13

nextcloudnextcloud_serverRange20.0.0–20.0.11

nextcloudnextcloud_serverRange21.0.0–21.0.3

VendorProductVersionCPE
nextcloudnextcloud_server*cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
nextcloud	nextcloud_server	*	cpe:2.3:a:nextcloud:nextcloud_server::::::::

CNA Affected

[
  {
    "product": "security-advisories",
    "vendor": "nextcloud",
    "versions": [
      {
        "status": "affected",
        "version": "< 19.0.13"
      },
      {
        "status": "affected",
        "version": ">= 20.0.0, < 20.0.11"
      },
      {
        "status": "affected",
        "version": ">= 21.0.0, < 21.0.3"
      }
    ]
  }
]