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CVE-2022-21830

22
FAUCET Score

CVE-2022-21830 is a blind self-XSS vulnerability affecting RocketChat LiveChat versions prior to 1.9. An attacker could exploit this by tricking a victim into pasting malicious code within their chat instance. With a CVSS score of 6.1 (Medium), this vulnerability requires user interaction (UI:R) and could lead to low impact on confidentiality and integrity (C:L/I:L). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.9.0CPE matchmatch criteria
cpe:2.3:a:rocket.chat:livechat:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.76%
Probability of exploitation in next 30 days
EPSS Percentile
51.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0076 is in the 58th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

npmpatch availablevia ghsa
Product: @rocket.chat/livechatFixed in: 1.9.0

Vendor Advisories (1)

npmGHSA-hf55-c445-2w97medium

Cross-site Scripting in @rocket.chat/livechat

Apr 3, 2022

References

hackerone.com / reports/1091118
ExploitThird Party Advisory