CVE-2022-21649: Convos is an open source multi-user chat that runs in a web browser

Q: How do I fix CVE-2022-21649?

convos: upgrade to 6.52. Exact commands for each OS are on this page.

Q: Is CVE-2022-21649 being exploited?

CVE-2022-21649 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-21649 affect?

CVE-2022-21649 affects convos. Severity is high (CVSS 7.6). Convos is an open source multi-user chat that runs in a web browser. Characters starting with "https://" in the chat window create an tag. Stored XSS vulnerability using onfocus and autofocus occurs because escaping exists for "

This month

HIGH 7.6UPGRADE

CVE-2022-21649 is a high-severity flaw (CVSS 7.6) affecting convos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.6 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-01-04
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: convos

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-01-04 21:15 UTCPublished CVE record published
2026-06-17 04:26 UTCUpdated Record last modified

convos convos UPGRADE

Affected: < 6.52

Fixed in: 6.52

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy convos || rpm -q convos || convos --version

2. UPGRADE to 6.52 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade convos

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade convos

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-21649?

convos: upgrade to 6.52. Exact commands for each OS are on this page.

Is CVE-2022-21649 being exploited?

CVE-2022-21649 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-21649 affect?

CVE-2022-21649 affects convos. Severity is high (CVSS 7.6). 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 ">

How urgent is CVE-2022-21649?

Priority 47/100. High severity; Public exploit reference

Related CVEs

CVE-2022-21650 HIGH 7.6 UPGRADE Convos is an open source multi-user chat that runs in a web browser
CVE-2021-42584 MEDIUM 5.4 UPGRADE A Stored Cross Site Scripting (XSS) issue exists in Convos-Chat before 6.32.

References

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