Is CVE-2026-108748 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-108748?

CVE-2026-108748 has a CVSS v3 severity of MEDIUM (5.3).

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CVE-2026-108748

Description

Quarkus LangChain4j 1.9.0 through 1.14.1 contains a missing release of memory vulnerability in the chat-scopes WebSocket /_chat/routes endpoint that allows unauthenticated remote clients to exhaust server memory. Attackers can send repeated CONNECT frames reusing one chatId, leaving orphaned scopes in activeScopes until the JVM exits and degrading availability.