Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2020-8294

A missing link validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows execution of a stored XSS attack using Internet Explorer when saving a 'javascript:' URL in markdown format.

Published

2021-02-03T17:15:16.293

Last Modified

2024-11-21T05:38:40.657

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.4 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:S/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

6.8

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-79
Type: Primary
CWE-79

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	nextcloud	nextcloud_server	< 18.0.11	Yes
Application	nextcloud	nextcloud_server	< 19.0.5	Yes
Application	nextcloud	nextcloud_server	< 20.0.2	Yes

References

https://hackerone.com/reports/1023787 Permissions Required, Third Party Advisory ([email protected])
https://nextcloud.com/security/advisory/?id=NC-SA-2021-002 Vendor Advisory ([email protected])
https://hackerone.com/reports/1023787 Permissions Required, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://nextcloud.com/security/advisory/?id=NC-SA-2021-002 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)