CVE-2026-108714

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Source
https://cve.org/CVERecord?id=CVE-2026-108714
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108714.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-108714
Published
2026-10-11T12:19:27Z
Modified
2026-10-13T02:45:33Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
MCP Kotlin SDK through 0.15.0 Memory Exhaustion via Application.mcpWebSocket
Details

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.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-770"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108714.json"
}
References

Affected packages

Git / github.com/modelcontextprotocol/kotlin-sdk

Affected ranges

Type
GIT
Repo
https://github.com/modelcontextprotocol/kotlin-sdk
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
76b8e7d63aac39fe41e03684e3b91a6c3724a8da
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "last_affected":  "0.15.0"
        },
        {
            "fixed":  "0.15.0"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

0.*
0.1.0
0.11.0
0.11.1
0.12.0
0.13.0
0.14.0
0.2.0
0.3.0
0.4.0
0.5.0
0.6.0
0.7.0
0.7.1
0.7.2
0.7.2-alpha1
0.7.2-alpha2
0.7.2-alpha3
0.7.4
0.7.5
0.7.6
0.7.7
0.8.0
0.8.1
0.8.3
0.9.0
v0.*
v0.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108714.json"