CVE-2021-39215

Authentication Bypass: Forged Tokens Allow Access to Arbitrary Rooms

HIGH
7.5
CVSS Score
Published: September 15, 2021 at 05:20 PM UTC
Updated: June 17, 2026 at 04:03 AM UTC
2 products affected across 2 vendorsJitsi MeetJitsi Meet

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

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.

Affected

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

v < 2.0.5963
Affected range stops below 2.0.5963, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-287

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