πŸ›‘οΈ CVE-2026-42188
🟒 CVSS 2.4 β€” Low βœ… No Known Exploit CWE-918 NVD
2.4
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Geyser is a bridge between Minecraft: Bedrock Edition and Minecraft: Java Edition. Prior to 2.9.3, a server-side request forgery (SSRF) vulnerability exists in Geyser’s handling of Bedrock player head texture data. By supplying a crafted Base64-encoded skin texture URL via the /give command, an attacker can cause the Minecraft server to issue arbitrary HTTP GET requests to attacker-controlled or internal endpoints. This occurs server-side, without proper URL validation, and can be triggered by a Bedrock client. This vulnerability is fixed in 2.9.3.

Details

Severity LOW
CVSS Score 2.4
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N
CWE CWE-918
Public Exploit βœ… No
Source NVD
Published 2026-05-05
Updated 2026-06-02
Modified 2026-05-13
Fix URL N/A

Affected Packages

Software From version Fixed in
org.geysermc.geyser:core β€” 2.9.3
unknown β€” β€”

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