CVE-2026-77474
destructive_command_guard (dcg) is a command-line safety tool that blocks destructive shell…
- Risk score
- 43/100
- CVSS
- 7.1 v3.1
- Exploit chance (30 days)
- 0.1%
- Published
- 16 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- destructive_command_guard (dcg) is a command-line safety tool that blocks destructive shell commands before AI coding agents run them. Prior to 0.6.6, nested or unclosed substitutions are recursively rescanned after an inner scan returns unterminated, producing exponential-time work. The affected scanners are reached …
- Affected
- See advisory
- Fix
- Upgrade the product to 0.6.6 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.1 high
References
- https://github.com/Dicklesworthstone/destructive_command_guard/commit/ba16bdd074b045329dc0ca6ec9a08c44403cfe1b
- https://github.com/Dicklesworthstone/destructive_command_guard/issues/189
- https://github.com/Dicklesworthstone/destructive_command_guard/releases/tag/v0.6.6
- https://github.com/Dicklesworthstone/destructive_command_guard/security/advisories/GHSA-4cfr-w3v5-w5j5
Original description
destructive_command_guard (dcg) is a command-line safety tool that blocks destructive shell commands before AI coding agents run them. Prior to 0.6.6, nested or unclosed substitutions are recursively rescanned after an inner scan returns unterminated, producing exponential-time work. The affected scanners are reached through split_command_segments in src/packs/mod.rs. a destructive command followed by nested or unclosed $( or $(( sequences. nested or unclosed $( and $(( sequences cause repeated rescanning of the remaining command suffix. a hung PreToolUse hook fails open, allowing the destructive command to proceed. This issue is fixed in version 0.6.6.
Last activity 16 Oct 2026. Patch Forecast updates every hour.