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.
Problem types
CWE-918: Server-Side Request Forgery (SSRF)
Product status
References
github.com/...Geyser/security/advisories/GHSA-xcfg-fcr5-gw9r
github.com/...Geyser/security/advisories/GHSA-xcfg-fcr5-gw9r