CVE-2021-39205

Name: CVE-2021-39205
Creator: NVD / NIST
Published: 2021-09-15T18:15:09.187+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.19%

Last modified Jun 17, 2026

CVE-2021-39205 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Jitsi Meet is an open source video conferencing application. Versions prior to 2.0.6173 are vulnerable to client-side cross-site scripting via injecting properties into JSON objects that were not properly escaped. EPSS estimates a 1.19% chance of exploitation in the next 30 days.

Description

Jitsi Meet is an open source video conferencing application. Versions prior to 2.0.6173 are vulnerable to client-side cross-site scripting via injecting properties into JSON objects that were not properly escaped. There are no known incidents related to this vulnerability being exploited in the wild. This issue is fixed in Jitsi Meet version 2.0.6173. There are no known workarounds aside from upgrading.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

1.19%

63.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
8x8	Jitsi Meet	< 2.0.6173

References

https://github.com/jitsi/jitsi-meet/pull/9320Patch, Third Party Advisory
https://github.com/jitsi/jitsi-meet/pull/9404Patch, Third Party Advisory
https://github.com/jitsi/jitsi-meet/security/advisories/GHSA-6582-8v9q-v3fgThird Party Advisory
https://hackerone.com/reports/1214493Permissions Required
https://github.com/jitsi/jitsi-meet/pull/9320Patch, Third Party Advisory
https://github.com/jitsi/jitsi-meet/pull/9404Patch, Third Party Advisory
https://github.com/jitsi/jitsi-meet/security/advisories/GHSA-6582-8v9q-v3fgThird Party Advisory
https://hackerone.com/reports/1214493Permissions Required

Timeline

Published: Sep 15, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39205?

How severe is CVE-2021-39205?

CVE-2021-39205 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.19% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39205?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-39205?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST