Quarkus LangChain4j 1.9.0 through 1.14.1 Memory Exhaustion via /_chat/routes WebSocket
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.
CVE-2026-108748
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-108748
quarkus-langchain4j
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/quarkiverse/quarkus-langchain4j",
"vendor": "quarkiverse",
"product": "quarkus-langchain4j",
"versions": [
{
"status": "affected",
"version": "1.9.0",
"versionType": "semver",
"lessThanOrEqual": "1.14.1"
}
],
"packageURL": "pkg:maven/io.quarkiverse.langchain4j/quarkus-langchain4j-chat-scopes-websocket",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-108748
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #20736 · Revision 1
- Added to Heist Feed
- Publisher date