Vuln Signal Radar
public-safe defensive signal
Agent JSON
MEDIUMpublic-safe

CVE-2026-53937

NVD: MCP Kotlin SDK is the Kotlin Multiplatform software development kit for the Model Context Protocol. NVD: In versions 0.7.0 through 0.12.0, ReadBuffer.append in kotlin-sdk-core/src/commonMain/kotlin/io/modelcontextprotocol/kotlin/sdk/shared/ReadBuffer.kt writes every chunk of bytes received from the stdio transport into a kotlinx.io.Buffer with no size cap. NVD: Frames are extracted from that buffer only when a \n (0x0a) byte is observed.

CVSS
6.2 Severity
MEDIUM EPSS
0.0019 (8) KEV
-

Source-published summary

NVD: MCP Kotlin SDK is the Kotlin Multiplatform software development kit for the Model Context Protocol. NVD: In versions 0.7.0 through 0.12.0, ReadBuffer.append in kotlin-sdk-core/src/commonMain/kotlin/io/modelcontextprotocol/kotlin/sdk/shared/ReadBuffer.kt writes every chunk of bytes received from the stdio transport into a kotlinx.io.Buffer with no size cap. NVD: Frames are extracted from that buffer only when a \n (0x0a) byte is observed.

Possible impact

Source describes service availability risk. Possible impact: The affected service may become unavailable or unreliable.

Affected context

Affected product or version requires source confirmation.

Remediation / advisory

Remediation reference present; patch status requires confirmation in the linked advisory.

Why it matters

Source describes service availability risk. Possible impact: The affected service may become unavailable or unreliable.; CVSS 6.2 (MEDIUM); EPSS percentile 8; not listed in KEV; Remediation reference present; patch status requires confirmation in the linked advisory; sources: NVD, OSV.

What to verify

Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.

Exposure hint

exposure unknown

Impact tags

service availability review

Urgency reasons

vendor advisory presentrecent updateremediation reference present

Source-derived note

Summary derived from NVD / OSV description; unsafe procedural detail is not shown.

Redaction metadata

source summary used
True
fallback summary used
False
unsafe procedural detail present
false
raw source displayed
false
public summary redacted
true

Remediation handoff

Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.

Handoff JSON Handoff Markdown Safe Codex prompt

Safety note

This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.

Official references