How severe is CVE-2022-21830?

CVE-2022-21830 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2022-21830 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-21830?

CVE-2022-21830 affects Rocket.chat Livechat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-21830?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-21830 published?

CVE-2022-21830 was published on 2022-04-01 and last updated on 2026-06-17.

CVE-2022-21830

CVE-2022-21830 is a medium-severity vulnerability in Rocket.chat Livechat with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Rocket.chat Livechat
Published: 2022-04-01
Last modified: 2026-06-17

Description

A blind self XSS vulnerability exists in RocketChat LiveChat <v1.9 that could allow an attacker to trick a victim pasting malicious code in their chat instance.

Frequently asked questions

What is CVE-2022-21830?: A blind self XSS vulnerability exists in RocketChat LiveChat <v1.9 that could allow an attacker to trick a victim pasting malicious code in their chat instance.
How severe is CVE-2022-21830?: CVE-2022-21830 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2022-21830 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-21830?: CVE-2022-21830 affects Rocket.chat Livechat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-21830?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-21830 published?: CVE-2022-21830 was published on 2022-04-01 and last updated on 2026-06-17.

References

https://hackerone.com/reports/1091118

Affected products (1)

cpe:2.3:a:rocket.chat:livechat:*:*:*:*:*:*:*:*

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