Vulnerability CVE-2020-15926
Published: 2020-08-18

Description:
Rocket.Chat through 3.4.2 allows XSS where an attacker can send a specially crafted message to a channel or in a direct message to the client which results in remote code execution on the client side.

Type:

CWE-79

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

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Rocket.chat -> Rocket.chat 

 References:
https://blog.redteam.pl/2020/08/rocket-chat-xss-rce-cve-2020-15926.html
https://github.com/RocketChat/Rocket.Chat/commits/develop
https://github.com/RocketChat/Rocket.Chat/pull/18356
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