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CVE-2022-21650 Details

Description

Convos is an open source multi-user chat that runs in a web browser. You can't use SVG extension in Convos' chat window, but you can upload a file with an .html extension. By uploading an SVG file with an html extension the upload filter can be bypassed. This causes Stored XSS. Also, after uploading a file the XSS attack is triggered upon a user viewing the file. Through this vulnerability, an attacker is capable to execute malicious scripts. Users are advised to update as soon as possible.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:7.6 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#First-vulnerability	CVE	Broken Link
https://github.com/convos-chat/convos/commit/5c0a1ec9a2c147bc3b63fd5a48da5f32e18fe5df	CVE	PatchThird Party Advisory
https://github.com/convos-chat/convos/security/advisories/GHSA-mm2v-4v7g-m695	CVE	PatchThird Party Advisory
https://www.huntr.dev/bounties/ae424798-de01-4972-b73b-2db674f82368/	CVE	ExploitIssue TrackingPatchThird Party Advisory
https://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#First-vulnerability	[email protected]	Broken Link
https://github.com/convos-chat/convos/commit/5c0a1ec9a2c147bc3b63fd5a48da5f32e18fe5df	[email protected]	PatchThird Party Advisory
https://github.com/convos-chat/convos/security/advisories/GHSA-mm2v-4v7g-m695	[email protected]	PatchThird Party Advisory
https://www.huntr.dev/bounties/ae424798-de01-4972-b73b-2db674f82368/	[email protected]	ExploitIssue TrackingPatchThird Party Advisory

see all 8 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
convos convos	>= 6.48, < 6.52
CPE cpe:2.3:a:convos:convos:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jan 11, 2022	Initial Analysis	[email protected]