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.
Published 2022-03-02 21:15:08
Updated 2022-03-09 21:10:57
Source GitHub, Inc.
View at NVD,   CVE.org
Vulnerability category: Cross site scripting (XSS)

Exploit prediction scoring system (EPSS) score for CVE-2022-23656

0.05%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 17 %
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

References for CVE-2022-23656

Products affected by CVE-2022-23656

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