CVE-2022-21650 HIGH

CVE-2022-21650: Stored XSS via html file upload in convos

Vendor Convos-Chat
Product convos
Weakness CWE-79 · XSS
Published January 4, 2022
Last update April 22, 2025
View on NVD All CVEs

CVSS base score

7.6/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

January 4, 2022 CVE published
April 22, 2025 Record updated

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04Related CVE

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