Security Advisory

CVE-2026-42188

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-11 21:25:27

Last updated 2026-05-13 14:39:09

Assigner GitHub_M

CVSS score 2.4

State PUBLISHED

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.

← Browse all CVEs View on cve.org ↗