Vulnerability Details : CVE-2022-23656
Zulip is an open source team chat app. The `main` development branch of Zulip Server from June 2021 and later is vulnerable to a cross-site scripting vulnerability on the recent topics page. An attacker could maliciously craft a full name for their account and send messages to a topic with several participants; a victim who then opens an overflow tooltip including this full name on the recent topics page could trigger execution of JavaScript code controlled by the attacker. Users running a Zulip server from the main branch should upgrade from main (2022-03-01 or later) again to deploy this fix.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2022-23656
- cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-23656
0.30%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 51 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-23656
| 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 | |
|
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 | |
|
4.6
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N |
2.1
|
2.5
|
GitHub, Inc. |
CWE ids for CVE-2022-23656
-
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:
- nvd@nist.gov (Primary)
- security-advisories@github.com (Secondary)
References for CVE-2022-23656
-
https://github.com/zulip/zulip/security/advisories/GHSA-fc77-h3jc-6mfv
Cross-site scripting vulnerability in Zulip Server development branch via tooltip · Advisory · zulip/zulip · GitHubThird Party Advisory
-
https://github.com/zulip/zulip/commit/e090027adcbf62737d5b1f83a9618a9500a49321
CVE-2022-23656: Fix cross-site scripting vulnerability in tooltips. · zulip/zulip@e090027 · GitHubPatch;Third Party Advisory
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