vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2022-21649

Stored XSS via attribute in convos

MEDIUM
5.4
CVSS Score
Published: January 4, 2022 at 08:40 PM UTC
Updated: June 17, 2026 at 04:26 AM UTC
2 products affected across 2 vendorsConvosConvos

Using convos by convos-chat?

Get instant alerts when new vulnerabilities affect convos - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM5.4
Exploit prediction
EPSS 0.9%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Convos· Convos
95%
v < 6.52
Affected range stops below 6.52, so it looks safe — our inference, not a vendor statement
Convos· Convos Chat
60%
v < 6.52
Affected range stops below 6.52, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_MISCBroken LinkThird Party Advisory
Source: [email protected]
https://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#Second-vulnerability
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/convos-chat/convos/commit/86b2193de375005ba71d9dd53843562c6ac1847c
x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://github.com/convos-chat/convos/security/advisories/GHSA-xmpj-xwm3-vww7
x_refsource_MISCExploitPatchThird Party Advisory
Source: [email protected]
https://www.huntr.dev/bounties/4532a0ac-4e7c-4fcf-9fe3-630e132325c0/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card