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Sunday, 13 September 2026
8 agent hacks today▲ 7 vs yesterday (1)
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Incident database

cli-mcp-server command allowlist bypass via shell operators

cli-mcp-server 0.2.5 contains a command allowlist bypass vulnerability in the _validate_command_with_operators function when ALLOW_SHELL_OPERATORS is enabled. Attackers can use shell command substitution syntax to execute non-allowlisted commands.

Disclosed 4 September 2026 · Record updated 13 September 2026

Impact

Allows execution of non-allowlisted commands when shell operators are enabled

Our coverage

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Sources

  1. github.comhttps://github.com/advisories/GHSA-wfpw-4v5h-6h32