https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Mon, 05 Oct 2026 07:39:50 +0000 https://cve.radiocsirt.org/vuln/cve-2026-53937 <p><strong>Affected:</strong> modelcontextprotocol io.modelcontextprotocol:kotlin-sdk, modelcontextprotocol io.modelcontextprotocol:kotlin-sdk-client, modelcontextprotocol io.modelcontextprotocol:kotlin-sdk-core, modelcontextprotocol io.modelcontextprotocol:kotlin-sdk-server</p> <p>MCP Kotlin SDK is the Kotlin Multiplatform software development kit for the Model Context Protocol. 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. Frames are extracted from that buffer only when a `\n` (0x0a) byte is observed. A peer that streams bytes without ever sending a newline causes the internal buffer to grow indefinitely until the JVM (or the surrounding host process) is OOM-killed. The leak is amplified by `StdioServerTransport` and `StdioClientTransport`, which both queue raw chunks through a `kotlinx.coroutines.channels.Channel&lt;ByteArray&gt;(Channel.UNLIMITED)` and then call `readBuffer.append(chunk)` without backpressure or size guard. This is a remote-pre-auth denial of service whenever an SDK stdio server&#39;s stdin is fed by an untrusted or attacker-controlled producer (for example: a host program that exec&#39;s the MCP server as a subprocess and pipes through bytes received from a network peer, or a sidecar wrapper that proxies bytes from an HTTP endpoint to the stdio transport). Version 0.13.0 fixes the issue.</p> <p><strong>Affected:</strong> modelcontextprotocol io.modelcontextprotocol:kotlin-sdk, modelcontextprotocol io.modelcontextprotocol:kotlin-sdk-client, modelcontextprotocol io.modelcontextprotocol:kotlin-sdk-core, modelcontextprotocol io.modelcontextprotocol:kotlin-sdk-server</p> <p>MCP Kotlin SDK is the Kotlin Multiplatform software development kit for the Model Context Protocol. 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. Frames are extracted from that buffer only when a `\n` (0x0a) byte is observed. A peer that streams bytes without ever sending a newline causes the internal buffer to grow indefinitely until the JVM (or the surrounding host process) is OOM-killed. The leak is amplified by `StdioServerTransport` and `StdioClientTransport`, which both queue raw chunks through a `kotlinx.coroutines.channels.Channel&lt;ByteArray&gt;(Channel.UNLIMITED)` and then call `readBuffer.append(chunk)` without backpressure or size guard. This is a remote-pre-auth denial of service whenever an SDK stdio server&#39;s stdin is fed by an untrusted or attacker-controlled producer (for example: a host program that exec&#39;s the MCP server as a subprocess and pipes through bytes received from a network peer, or a sidecar wrapper that proxies bytes from an HTTP endpoint to the stdio transport). Version 0.13.0 fixes the issue.</p> https://cve.radiocsirt.org/vuln/cve-2026-53937