Answer in brief
CVE-2026-108714 records a High severity (CVSS 8.7) vulnerability in MCP Kotlin SDK through 0.15.0 Memory Exhaustion via Application.mcpWebSocket. The current sources do not mark it as known exploited. The current feed maps modelcontextprotocol/kotlin-sdk (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps modelcontextprotocol/kotlin-sdk (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| modelcontextprotocol/kotlin-sdkgeneric | >=0 <=0.15.0 | Not reported |
Published upstream
Oct 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 11, 2026
MCP Kotlin SDK through 0.15.0 contains an uncontrolled memory allocation vulnerability that allows remote clients to exhaust server memory because Application.mcpWebSocket installs Ktor WebSockets without a maxFrameSize limit. Attackers can send small frame headers declaring payloads near 2 GiB over one or a few connections, forcing huge heap allocations and causing denial of service.
Quoted source text, attributed separately from HOL analysis.