Vulnerability Details : CVE-2022-21649
Potential exploit
Convos is an open source multi-user chat that runs in a web browser. Characters starting with "https://" in the chat window create an <a> tag. Stored XSS vulnerability using onfocus and autofocus occurs because escaping exists for "<" or ">" but escaping for double quotes does not exist. Through this vulnerability, an attacker is capable to execute malicious scripts. Users are advised to update as soon as possible.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2022-21649
- cpe:2.3:a:convos:convos:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-21649
0.13%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 48 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-21649
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 | |
7.6
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N |
2.3
|
4.7
|
GitHub, Inc. |
CWE ids for CVE-2022-21649
-
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-2022-21649
-
https://www.huntr.dev/bounties/4532a0ac-4e7c-4fcf-9fe3-630e132325c0/
Cross-site Scripting (XSS) - Stored vulnerability found in convosExploit;Patch;Third Party Advisory
-
https://github.com/convos-chat/convos/commit/86b2193de375005ba71d9dd53843562c6ac1847c
Fix XSS vulnerability in links and changed I18N.md() to be understand… · convos-chat/convos@86b2193 · GitHubPatch;Third Party Advisory
-
https://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#Second-vulnerability
Stored XSS in convos-chat/convosBroken Link;Third Party Advisory
-
https://github.com/convos-chat/convos/security/advisories/GHSA-xmpj-xwm3-vww7
Stored XSS via attribute · Advisory · convos-chat/convos · GitHubPatch;Third Party Advisory
Jump to