Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Convos | Convos | >= 6.48, < 6.52 |
Related Weaknesses (CWE)
References
- https://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#First-vulnerabiliBroken Link
- https://github.com/convos-chat/convos/commit/5c0a1ec9a2c147bc3b63fd5a48da5f32e18PatchThird Party Advisory
- https://github.com/convos-chat/convos/security/advisories/GHSA-mm2v-4v7g-m695PatchThird Party Advisory
- https://www.huntr.dev/bounties/ae424798-de01-4972-b73b-2db674f82368/ExploitIssue TrackingPatch
- https://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#First-vulnerabiliBroken Link
- https://github.com/convos-chat/convos/commit/5c0a1ec9a2c147bc3b63fd5a48da5f32e18PatchThird Party Advisory
- https://github.com/convos-chat/convos/security/advisories/GHSA-mm2v-4v7g-m695PatchThird Party Advisory
- https://www.huntr.dev/bounties/ae424798-de01-4972-b73b-2db674f82368/ExploitIssue TrackingPatch
FAQ
What is CVE-2022-21650?
CVE-2022-21650 is a vulnerability with a CVSS score of 7.6 (HIGH). 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 wit...
How severe is CVE-2022-21650?
CVE-2022-21650 has been rated HIGH with a CVSS base score of 7.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-21650?
Check the references section above for vendor advisories and patch information. Affected products include: Convos Convos.