Fiche vulnérabilité
CVE-2026-42188 : faille moyenne geysermc geyser (CVSS 4.3)
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.
En bref
- Sévérité
- Moyenne (CVSS 4.3)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
- Exploitation active
- Non signalée par la CISA
- Publication
- 11 mai 2026
- Dernière mise à jour
- 25 août 2026
Produits concernés
- geysermc geyser