# CVE-2026-44462: Zed: Allowlist Bypass via Bash Variable Expansion Chain in Terminal Tool Permissions


- **Severity:** Medium 6.4 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 28 May 2026
- **Updated:** 29 May 2026
- **Also known as:** GHSA-rqq3-p6x4-q866, UBUNTU-CVE-2026-44462

## What is CVE-2026-44462?

CVE-2026-44462 is a medium-severity vulnerability in zed-industries zed, published on 28 May 2026. 

### Official description

Zed is a code editor. Prior to 0.229.0, Zed's terminal tool permission system can be bypassed via bash variable expansion chaining (${var@P}), allowing arbitrary command execution under an allowlisted command prefix. This vulnerability is fixed in 0.229.0.

Weakness: CWE-184 (Incomplete List of Disallowed Inputs)

## Which versions are affected by CVE-2026-44462?

It affects 1 product.


Products: Zed Zed.

## How do I fix CVE-2026-44462?

No fix has been published for CVE-2026-44462 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-44462 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44462 exists.

## Other vulnerabilities in zed-industries zed

- [CVE-2026-27976](https://insights.sbomify.com/CVE-2026-27976/): Zed Extension Sandbox Escape via Tar Symlink Following (high 8.8)
- [CVE-2026-44461](https://insights.sbomify.com/CVE-2026-44461/): Zed: Remote Command Injection via Unquoted Environment Variable Keys (SSH / WSL Remote) (high 8.6)
- [CVE-2026-44463](https://insights.sbomify.com/CVE-2026-44463/): Zed: Allowlist Bypass via Environment Variable Injection in Terminal Tool Permissions (high 8.6)
- [CVE-2026-44465](https://insights.sbomify.com/CVE-2026-44465/): Zed: Zed IDE Arbitrary Code Execution via untrusted repository with poisoned .git/config (high 8.6)
- [CVE-2026-44466](https://insights.sbomify.com/CVE-2026-44466/): Zed: Allowlist Bypass via Bash Arithmetic Expansion in Terminal Tool Permissions (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-44462 and fix it if it is affected.

What it is: CVE-2026-44462 is a medium-severity vulnerability in zed-industries zed, published on 28 May 2026. 
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44462 exists.

Affected product: zed-industries zed. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-44462/ (Markdown: https://insights.sbomify.com/CVE-2026-44462/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-44462
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-44462
- OSV: https://osv.dev/vulnerability/CVE-2026-44462

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-44462/
Summaries are generated and may contain mistakes; the official description above is the record.