Vulnerability CVE-2021-3866
Published: 2022-01-20

Description:
Cross-site Scripting (XSS) - Stored in GitHub repository zulip/zulip prior to and including 4.8.

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
Zulip -> Zulip 

 References:
https://huntr.dev/bounties/5f48dac5-e112-4b23-bbbf-cc00ba83bcf2
https://github.com/zulip/zulip/commit/3eb2791c3e9695f7d37ffe84e0c2184fae665cb6
https://blog.zulip.com/2022/01/19/cve-2021-3866/
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