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Tracking
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-3x77-wg38-92r3 | mcp-shell has a Secure Mode Allowlist Bypass via Default `/bin/bash` Executable |
Tue, 25 Aug 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 25 Aug 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Sonirico
Sonirico mcp-shell |
|
| Vendors & Products |
Sonirico
Sonirico mcp-shell |
Tue, 25 Aug 2026 16:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | mcp-shell is an MCP server for running shell commands securely, auditably, and on demand. Prior to 0.6.0, the default Docker security.yaml includes /bin/bash in allowed_executables, while security.go validates only the first token and checkBlockedPatternsAndCommands does not reject the shell command-mode flag -c. A caller of the shell_exec MCP tool can provide the command argument `/bin/bash -c <arbitrary-command>`, which passes validation and reaches executor.go, where parseCommand and exec.CommandContext execute the arbitrary command as mcpuser outside the intended allowlist. This issue is fixed in version 0.6.0. | |
| Title | mcp-shell: Secure Mode Allowlist Bypass via Default `/bin/bash` Executable | |
| Weaknesses | CWE-1188 CWE-183 CWE-78 |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-25T19:01:56.083Z
Reserved: 2026-06-16T23:18:03.169Z
Link: CVE-2026-55581
Updated: 2026-08-25T19:01:50.337Z
Status : Received
Published: 2026-08-25T16:16:55.470
Modified: 2026-08-25T19:16:50.040
Link: CVE-2026-55581
No data.
OpenCVE Enrichment
Updated: 2026-08-25T19:00:08Z
Github GHSA