Vulnerability Details : CVE-2021-3866
Cross-site Scripting (XSS) - Stored in GitHub repository zulip/zulip more than and including 44f935695d452cc3fb16845a0c6af710438b153d and prior to 3eb2791c3e9695f7d37ffe84e0c2184fae665cb6.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2021-3866
- cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3866
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 24 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3866
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:P/A:N |
6.8
|
2.9
|
NIST | |
|
6.8
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:L/A:L |
1.0
|
5.3
|
huntr.dev | |
|
5.4
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
2.3
|
2.7
|
NIST |
CWE ids for CVE-2021-3866
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: security@huntr.dev (Primary)
References for CVE-2021-3866
-
https://huntr.dev/bounties/5f48dac5-e112-4b23-bbbf-cc00ba83bcf2
Cross-site Scripting (XSS) - Stored vulnerability found in zulipExploit;Third Party Advisory
-
https://github.com/zulip/zulip/commit/3eb2791c3e9695f7d37ffe84e0c2184fae665cb6
CVE-2021-3853: Fix HTML escaping in recipient_row. · zulip/zulip@3eb2791 · GitHubPatch;Third Party Advisory
-
https://blog.zulip.com/2022/01/19/cve-2021-3866/
CVE-2021-3866: XSS in stream namesVendor Advisory
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