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CVE-2021-39177

CVSS v3.1 9.8 (Critical)
98% Progress
CVSS v2.0 7.5 (High)
75% Progress
EPSS 0.24 % (65th)
0.24% Progress
Affected Products 1
Advisories 1
Info CVSS EPSS CAPEC Affected Configurations References Security Advisories Packages & Software Graph Web & Social Timeline

Geyser is a bridge between Minecraft: Bedrock Edition and Minecraft: Java Edition. Versions of Geyser prior to 1.4.2-SNAPSHOT allow anyone that can connect to the server to forge a LoginPacket with manipulated JWT token allowing impersonation as any user. Version 1.4.2-SNAPSHOT contains a patch for the issue. There are no known workarounds aside from upgrading.

Weaknesses
CWE-287
Improper Authentication
CVE Status
PUBLISHED
CNA
GitHub, Inc.
Published Date
2021-08-30 23:15:07
(3 years ago)
Updated Date
2021-09-10 14:30:16
(3 years ago)

Affected Products

Geysermc

Configuration #1

    CPE23 From Up To
  Geysermc Geyser prior 1.4.2 version cpe:2.3:a:geysermc:geyser < 1.4.2