mcp-shell — Security Disabled by Default in Bare-Binary Deploy Path + Shell Interpreter in Secure-Mode Allowlist

mcp-shell at commit 17ac0eef5c9a5a42b8fb132d3d034973d55a5433 has two issues that together mean neither the default deploy path nor the recommended "secure mode" delivers the restriction they're marketed as providing. Filing these together because the two failure modes bracket the full intended...

GHSA-F5PJ-2738-996M mcp-shell — Security Disabled by Default in Bare-Binary Deploy Path + Shell Interpreter in Secure-Mode Allowlist

mcp-shell at commit 17ac0eef5c9a5a42b8fb132d3d034973d55a5433 has two issues that together mean neither the default deploy path nor the recommended "secure mode" delivers the restriction they're marketed as providing. Filing these together because the two failure modes bracket the full intended...

EUVD-2026-65550

mcp-shell is an MCP server for running shell commands securely, auditably, and on demand. Prior to 0.6.0, config.go initializes Security.Enabled to false, and when MCPSHELLSECCONFIGFILE is unset, main.go starts the documented bare-binary deployment without a security policy...

CVE-2026-55580 mcp-shell — Security Disabled by Default in Bare-Binary Deploy Path + Shell Interpreter in Secure-Mode Allowlist

mcp-shell is an MCP server for running shell commands securely, auditably, and on demand. Prior to 0.6.0, config.go initializes Security.Enabled to false, and when MCPSHELLSECCONFIGFILE is unset, main.go starts the documented bare-binary deployment without a security policy...

CVE-2026-55580

mcp-shell is an MCP server for running shell commands. Prior to 0.6.0 , config.go initializes Security.Enabled to false, and when MCP_SHELL_SEC_CONFIG_FILE is unset, the documented bare-binary deployment starts without a security policy. SecurityValidator.validateCommand in security.go then short...

CVE-2026-55580 mcp-shell — Security Disabled by Default in Bare-Binary Deploy Path + Shell Interpreter in Secure-Mode Allowlist

mcp-shell is an MCP server for running shell commands securely, auditably, and on demand. Prior to 0.6.0, config.go initializes Security.Enabled to false, and when MCPSHELLSECCONFIGFILE is unset, main.go starts the documented bare-binary deployment without a security policy...

CVE-2026-55580

mcp-shell is an MCP server for running shell commands securely, auditably, and on demand. Prior to 0.6.0, config.go initializes Security.Enabled to false, and when MCPSHELLSECCONFIGFILE is unset, main.go starts the documented bare-binary deployment without a security policy...

CVE-2026-55580 mcp-shell — Security Disabled by Default in Bare-Binary Deploy Path + Shell Interpreter in Secure-Mode Allowlist

mcp-shell is an MCP server for running shell commands securely, auditably, and on demand. Prior to 0.6.0, config.go initializes Security.Enabled to false, and when MCPSHELLSECCONFIGFILE is unset, main.go starts the documented bare-binary deployment without a security policy...

binary-exploitation-writeups

Binary Exploitation Writeups A comprehensive collection of bi...

GHSA-3X77-WG38-92R3 mcp-shell has a Secure Mode Allowlist Bypass via Default `/bin/bash` Executable

Summary mcp-shell ships a default Docker configuration security.yaml that includes /bin/bash in the allowedexecutables allowlist. The command validator security.go only checks whether the first token of the supplied command matches an allowed executable; it does not inspect or reject shell...

mcp-shell has a Secure Mode Allowlist Bypass via Default `/bin/bash` Executable

Summary mcp-shell ships a default Docker configuration security.yaml that includes /bin/bash in the allowedexecutables allowlist. The command validator security.go only checks whether the first token of the supplied command matches an allowed executable; it does not inspect or reject shell...

mcp-shell has a Secure Mode Allowlist Bypass via Git Shell Alias

Summary mcp-shell's "secure mode" is designed to restrict command execution to an allowlist of executables defined in security.yaml. The default configuration includes /usr/bin/git. The security validator in security.go blocks common shell metacharacters |&;$\ but omits !, which is the prefix Git...

GHSA-74HP-MGGR-HV58 mcp-shell has a Secure Mode Allowlist Bypass via Git Shell Alias

Summary mcp-shell's "secure mode" is designed to restrict command execution to an allowlist of executables defined in security.yaml. The default configuration includes /usr/bin/git. The security validator in security.go blocks common shell metacharacters |&;$\ but omits !, which is the prefix Git...

CVE-2026-79783 rclone before 1.74.4 Privilege Escalation via setuid Metadata

rclone before 1.74.4 fails to mask special permission bits when applying source-supplied mode metadata in the local backend, allowing attackers to set setuid/setgid bits on attacker-controlled files. When copying with metadata preservation from an untrusted remote, attackers can plant a setuid...

CVE-2026-79783

rclone before 1.74.4 contains a privilege escalation vulnerability in its local backend . The root cause is a failure to mask special permission bits (setuid/setgid) when applying source-supplied mode metadata. An attacker who controls a remote source can plant a setuid binary by copying files wi...

CVE-2026-79783 rclone before 1.74.4 Privilege Escalation via setuid Metadata

rclone before 1.74.4 fails to mask special permission bits when applying source-supplied mode metadata in the local backend, allowing attackers to set setuid/setgid bits on attacker-controlled files. When copying with metadata preservation from an untrusted remote, attackers can plant a setuid...

CVE-2026-79783 rclone before 1.74.4 Privilege Escalation via setuid Metadata

rclone before 1.74.4 fails to mask special permission bits when applying source-supplied mode metadata in the local backend, allowing attackers to set setuid/setgid bits on attacker-controlled files. When copying with metadata preservation from an untrusted remote, attackers can plant a setuid...

EUVD-2026-65541

rclone before 1.74.4 fails to mask special permission bits when applying source-supplied mode metadata in the local backend, allowing attackers to set setuid/setgid bits on attacker-controlled files. When copying with metadata preservation from an untrusted remote, attackers can plant a setuid...

CVE-2026-79783

rclone before 1.74.4 fails to mask special permission bits when applying source-supplied mode metadata in the local backend, allowing attackers to set setuid/setgid bits on attacker-controlled files. When copying with metadata preservation from an untrusted remote, attackers can plant a setuid...

CVE-2026-79783

rclone before 1.74.4 fails to mask special permission bits when applying source-supplied mode metadata in the local backend, allowing attackers to set setuid/setgid bits on attacker-controlled files. When copying with metadata preservation from an untrusted remote, attackers can plant a setuid...