Vulnerability CVE-2019-15619
Published: 2020-02-04

Description:
Improper neutralization of file names, conversation names and board names in Nextcloud Server 16.0.3, Nextcloud Talk 6.0.3 and Nextcloud Deck 0.6.5 causes an XSS when linking them with each others in a project.

Type:

CWE-79

 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))

CVSS2 => (AV:N/AC:M/Au:S/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.5/10
2.9/10
6.8/10
Exploit range
Attack complexity
Authentication
Remote
Medium
Single time
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Nextcloud -> DECK 
Nextcloud -> Nextcloud server 
Nextcloud -> TALK 

 References:
https://hackerone.com/reports/662204
https://nextcloud.com/security/advisory/?id=NC-SA-2020-008
https://nextcloud.com/security/advisory/?id=NC-SA-2020-009
https://nextcloud.com/security/advisory/?id=NC-SA-2020-010
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