# CVE-2026-44454: Coder vulnerable to workspace auto-creation via crafted URL parameters without user consent

> Attackers can execute arbitrary commands in provisioned workspaces via crafted dotfiles URIs, potentially leading to code execution.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 7 Jul 2026
- **Updated:** 8 Jul 2026
- **Also known as:** GHSA-m3cr-vc2j-pm27, GO-2026-5897

## What is CVE-2026-44454?

CVE-2026-44454 is a high-severity command injection vulnerability in coder, published on 7 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7 and 2.30.2, the `dotfiles` registry module passed unsanitized user input to shell commands, allowing arbitrary code execution inside a provisioned workspace. Any user who supplied a crafted `dotfiles_uri` value (for example, one containing shell command substitution such as `$(...)`) could achieve command execution in their own workspace. The Create Workspace page's `mode=auto` deep links amplified this into a one-click attack: an attacker could craft a URL that prefilled `param.dotfiles_uri` and silently provisioned a workspace with the attacker-controlled value, with no explicit user confirmation. In versions 2.29.7 and 2.30.2, input validation was added to the dotfiles module to reject URIs and usernames containing special characters, and the unsafe `eval`/`sh -c` usage was removed. This eliminated the command injection at its source.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-44454?

8 open source packages ship an affected version, including github.com/coder/coder/v2 and github.com/coder/coder. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/coder/coder/v2` | Go | All versions | 2.29.7, 2.30.2 |
| `github.com/coder/coder/v2` | Go | All versions | 2.29.7 |
| `github.com/coder/coder/v2` | Go | All versions | 2.29.7 |
| `github.com/coder/coder/v2` | Go | From 2.30.0 | 2.30.2 |
| `github.com/coder/coder/v2` | Go | From 2.30.0 | 2.30.2 |
| `github.com/coder/coder` | Go | All versions | None |
| `github.com/coder/coder` | Go | All versions to 0.27.3 | None |
| `github.com/coder/coder` | Go | All versions to 0.27.3 | None |

Products: Coder Coder.

## How do I fix CVE-2026-44454?

Upgrade github.com/coder/coder/v2 to a fixed version for your release line: 2.29.7 or 2.30.2.

## Is CVE-2026-44454 being exploited?

There is no known exploitation of CVE-2026-44454 in the wild and no public exploit code.

## Other vulnerabilities in coder

- [CVE-2026-46354](https://insights.sbomify.com/CVE-2026-46354/): Coder: PKCS#7 signature bypass in Azure instance identity allows unauthenticated agent token theft (critical 9.1)
- [CVE-2026-55429](https://insights.sbomify.com/CVE-2026-55429/): Coder's workspace app upsert allows cross-workspace agent rebinding via user-controlled app ID (high 8.7)
- [CVE-2026-55427](https://insights.sbomify.com/CVE-2026-55427/): Coder vulnerable to SSH config injection via unsanitized server-supplied values in `coder config-ssh` (high 8.3)
- [CVE-2026-55428](https://insights.sbomify.com/CVE-2026-55428/): Coder: Route hijacking through lack of validation of agent-supplied AllowedIPs in tailnet coordinator (high 8.2)
- [CVE-2024-27918](https://insights.sbomify.com/CVE-2024-27918/): Coder's OIDC authentication allows email with partially matching domain to register (high 8.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-44454 and fix it if it is affected.

What it is: CVE-2026-44454 is a high-severity command injection vulnerability in coder, published on 7 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-44454 in the wild and no public exploit code.

Affected packages and fixed versions:
- github.com/coder/coder/v2 (Go): affected all versions; fixed in 2.29.7, 2.30.2
- github.com/coder/coder/v2 (Go): affected all versions; fixed in 2.29.7
- github.com/coder/coder/v2 (Go): affected all versions; fixed in 2.29.7
- github.com/coder/coder/v2 (Go): affected from 2.30.0; fixed in 2.30.2
- github.com/coder/coder/v2 (Go): affected from 2.30.0; fixed in 2.30.2
- github.com/coder/coder (Go): affected all versions; no fix listed
- github.com/coder/coder (Go): affected all versions up to 0.27.3; no fix listed
- github.com/coder/coder (Go): affected all versions up to 0.27.3; no fix listed

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-2026-44454/ (Markdown: https://insights.sbomify.com/CVE-2026-44454/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-44454
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-44454
- OSV: https://osv.dev/vulnerability/CVE-2026-44454

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-44454/
Summaries are generated and may contain mistakes; the official description above is the record.