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Richard Feldman f3fb4e04aa
Reject shell substitutions in terminal tool commands (#51689)
Harden the terminal tool's permission system to reject commands
containing shell substitutions and interpolations (`$VAR`, `${VAR}`,
`$(…)`, backticks, `$((…))`, `<(…)`, `>(…)`) before they reach terminal
creation.

## Changes

### Shell command parser (`shell_command_parser`)
- Added structured terminal command-prefix extraction with env-var
prefix support
- Added parser-backed validation that classifies commands as
Safe/Unsafe/Unknown
- Extended normalized command extraction to include scalar env-var
assignments in order
- Preserved quoted assignment values when they contain whitespace or
special characters

### Pattern extraction (`agent/pattern_extraction`)
- Updated terminal pattern extraction to use structured parser output
- Included env-var prefixes in generated allow patterns
- Normalized regex token boundaries to `\s+` while preserving display
whitespace

### Tool permissions (`agent/tool_permissions`)
- Added invalid-terminal-command rejection for forbidden
substitutions/interpolations
- Added unconditional allow-all bypass (global default Allow, or
terminal-specific Allow with empty patterns)
- Preserved hardcoded denial precedence over allow-all

### Terminal tool (`agent/tools/terminal_tool`)
- Updated tool description and input schema to explicitly prohibit shell
substitutions
- Added comprehensive SEC-264 regression test suite (20 new tests)
covering:
- All forbidden constructs (`${HOME}`, `$1`, `$?`, `$$`, `$@`,
`$(whoami)`, backticks, `$((1+1))`, `<(ls)`, `>(cat)`, env-prefix
variants, multiline, nested)
  - Allow-all exception paths (global and terminal-specific)
  - Hardcoded-denial precedence
- Env-prefix permission flow (matching, value mismatch rejection,
multiple assignments, quoted whitespace)

Closes SEC-264

Release Notes:

- Terminal tool permissions regexes can now match environment variables
(e.g. `FOO=bar cmd arg1 arg2`)
- If terminal tool permissions have active permissions regexes running
on them, then bare interpolations like `$FOO` are disallowed for
security, since regexes wouldn't be able to match on them.
2026-03-16 23:49:34 -04:00
.cargo livekit: Use our build of libwebrtc.a (#51433) 2026-03-16 10:47:36 +01:00
.cloudflare
.config Increase timeout for test_random_blocks (#50724) 2026-03-04 12:25:12 -05:00
.factory Add humanizer skill for AI writing pattern detection (#50021) 2026-02-24 14:58:52 -06:00
.github extension_ci: Bump update action and fix cache issues (#51716) 2026-03-16 22:26:56 +00:00
.zed gpui: Rewrite Windows PlatformTextSystem for better performance (#48087) 2026-02-01 13:32:22 +01:00
assets Disable the tilt LSP by default for "Starlark" files (#51709) 2026-03-16 22:48:20 +00:00
ci Move Nightly release to gh-workflow (#41349) 2025-10-28 13:57:23 -06:00
crates Reject shell substitutions in terminal tool commands (#51689) 2026-03-16 23:49:34 -04:00
docs docs: Update Claude Sonnet 4.6 and Opus 4.6 context windows to 1M (#51695) 2026-03-16 13:34:20 -05:00
extensions glsl: Bump to v0.2.2 (#51682) 2026-03-16 16:17:56 +00:00
legal Update legal docs to reflect new terms of service (#50530) 2026-03-02 12:36:31 -08:00
nix nix: Correctly handle commitSha == null in nix devshell (#51319) 2026-03-11 18:48:12 +00:00
script livekit: Use our build of libwebrtc.a (#51433) 2026-03-16 10:47:36 +01:00
tooling extension_ci: Bump update action and fix cache issues (#51716) 2026-03-16 22:26:56 +00:00
.git-blame-ignore-revs Add PR 50413 to .git-blame-ignore-revs (#50421) 2026-03-01 00:50:33 +01:00
.gitattributes windows: Make sure zed.sh using the correct line ending (#37650) 2025-09-05 16:25:55 +00:00
.gitignore docs: Improve Git documentation accuracy and structure (#47419) 2026-01-23 08:43:24 -08:00
.mailmap Update .mailmap (#47413) 2026-01-22 23:57:26 +05:30
.prettierrc ci: Add check for formatting default.json (#30034) 2025-05-06 18:55:26 +00:00
.rules Update AI docs for retired hosted models (#49486) 2026-02-18 10:36:38 -06:00
AGENTS.md ai: Symlink an AGENTS.md file to .rules (#45939) 2026-01-19 15:29:42 +01:00
Cargo.lock Move sidebar back out of the panel (#51723) 2026-03-17 03:48:20 +00:00
Cargo.toml Move sidebar back out of the panel (#51723) 2026-03-17 03:48:20 +00:00
CLAUDE.md Initial .rules file for agent with symlinks for other rules file paths (#29014) 2025-04-17 23:41:23 +00:00
clippy.toml Revert "Revert scheduler update (#46659)" (#46671) 2026-01-14 07:19:13 +00:00
CODE_OF_CONDUCT.md
compose.yml Remove Postgres and stripe-mock from Docker Compose (#48313) 2026-02-04 03:42:58 +00:00
CONTRIBUTING.md Add Zed Feature Process document (#50747) 2026-03-06 14:14:53 -08:00
debug.plist
default.nix nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
Dockerfile-collab ci: Update workflows/scripts for deploying collab to use clang (#51224) 2026-03-10 22:41:43 +01:00
Dockerfile-collab.dockerignore
Dockerfile-cross.dockerignore
Dockerfile-distros
Dockerfile-distros.dockerignore
flake.lock nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
flake.nix Try to improve nix caching (#48297) 2026-02-03 20:31:02 -07:00
GEMINI.md Add missing GEMINI.md rule file for gemini-cli (#38885) 2025-10-02 09:47:29 -04:00
LICENSE-AGPL
LICENSE-APACHE
LICENSE-GPL
livekit.yaml
lychee.toml ci: Check for broken links (#30844) 2025-06-06 09:39:35 +00:00
Procfile Update instructions for local collaboration (#35689) 2025-08-06 11:10:28 -07:00
Procfile.all Add agent thread sharing (#46140) 2026-01-06 12:49:51 -08:00
Procfile.web Remove PostgREST (#41299) 2025-10-27 13:27:59 -04:00
README.md Add sponsor button to main Zed repo (#46807) 2026-01-14 10:38:51 -06:00
renovate.json Remove workspace-hack (#40216) 2025-10-17 18:58:14 +00:00
REVIEWERS.conl Remove previous teammates from REVIEWERS.conl (#46934) 2026-01-15 18:43:34 +00:00
rust-toolchain.toml GPUI on the web (#50228) 2026-02-26 18:36:50 +01:00
rustfmt.toml nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
shell.nix nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
typos.toml docs: Add Vue language server configuration (#51356) 2026-03-12 16:30:21 +00:00

Zed

Zed CI

Welcome to Zed, a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.


Installation

On macOS, Linux, and Windows you can download Zed directly or install Zed via your local package manager (macOS/Linux/Windows).

Other platforms are not yet available:

Developing Zed

Contributing

See CONTRIBUTING.md for ways you can contribute to Zed.

Also... we're hiring! Check out our jobs page for open roles.

Licensing

License information for third party dependencies must be correctly provided for CI to pass.

We use cargo-about to automatically comply with open source licenses. If CI is failing, check the following:

  • Is it showing a no license specified error for a crate you've created? If so, add publish = false under [package] in your crate's Cargo.toml.
  • Is the error failed to satisfy license requirements for a dependency? If so, first determine what license the project has and whether this system is sufficient to comply with this license's requirements. If you're unsure, ask a lawyer. Once you've verified that this system is acceptable add the license's SPDX identifier to the accepted array in script/licenses/zed-licenses.toml.
  • Is cargo-about unable to find the license for a dependency? If so, add a clarification field at the end of script/licenses/zed-licenses.toml, as specified in the cargo-about book.

Sponsorship

Zed is developed by Zed Industries, Inc., a for-profit company.

If youd like to financially support the project, you can do so via GitHub Sponsors. Sponsorships go directly to Zed Industries and are used as general company revenue. There are no perks or entitlements associated with sponsorship.