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CVE-2021-39215

7.5 · HIGH

Jitsi Meet is an open source video conferencing application.

Published Sep 15, 2021CWE-287EPSS 1.23%

Overview

CVE-2021-39215 is a high-severity vulnerability. It was published on September 15, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Jitsi Meet is an open source video conferencing application. In versions prior to 2.0.5963, a Prosody module allows the use of symmetrical algorithms to validate JSON web tokens. This means that tokens generated by arbitrary sources can be used to gain authorization to protected rooms. This issue is fixed in Jitsi Meet 2.0.5963. There are no known workarounds aside from updating.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/jitsi/jitsi-meet/pull/9319GitHubgithub.com/jitsi/jitsi-meet/security/advisories/GHSA-45ff-37jm-xjfxGitHubgithub.com/jitsi/jitsi-meet/pull/9319GitHubgithub.com/jitsi/jitsi-meet/security/advisories/GHSA-45ff-37jm-xjfx

How CyberStrike helps

Frequently asked questions

What is CVE-2021-39215?

CVE-2021-39215 is a high-severity vulnerability. It was published on September 15, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2021-39215?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-39215?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-39215?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-39215 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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