# CVE-2026-32304: Locutus: RCE via unsanitized input in create_function()

> Attackers can execute arbitrary code via unsanitized input in the create_function method of the Locutus JavaScript library.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 12 Mar 2026
- **Updated:** 15 Jul 2026
- **Also known as:** GHSA-vh9h-29pq-r5m8

## What is CVE-2026-32304?

CVE-2026-32304 is a critical code injection vulnerability in locutusjs locutus, published on 12 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. Prior to 3.0.14, the create_function(args, code) function passes both parameters directly to the Function constructor without any sanitization, allowing arbitrary code execution. This is distinct from CVE-2026-29091 which was call_user_func_array using eval() in v2.x. This finding affects create_function using new Function() in v3.x. This vulnerability is fixed in 3.0.14.

Weakness: CWE-88 (Improper Neutralization of Argument Delimiters in a Command), CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2026-32304?

2 open source packages ship an affected version, including locutus. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `locutus` | npm | All versions | 3.0.14 |
| `locutus` | npm | All versions | 3.0.14 |

Products: Locutus Locutus.

## How do I fix CVE-2026-32304?

Upgrade locutus to 3.0.14 or later.

## Is CVE-2026-32304 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32304 exists.

## Other vulnerabilities in locutusjs locutus

- [CVE-2020-7719](https://insights.sbomify.com/CVE-2020-7719/): Prototype Pollution (critical 9.8)
- [CVE-2026-25521](https://insights.sbomify.com/CVE-2026-25521/): Locutus is vulnerable to Prototype Pollution (critical 9.4)
- [CVE-2026-29091](https://insights.sbomify.com/CVE-2026-29091/): Locutus: Remote Code Execution (RCE) in locutus call_user_func_array due to Code Injection (high 8.1)
- [CVE-2026-33993](https://insights.sbomify.com/CVE-2026-33993/): Locutus has Prototype Pollution via __proto__ Key Injection in unserialize() (medium 6.9)
- [CVE-2026-33994](https://insights.sbomify.com/CVE-2026-33994/): Locutus Prototype Pollution due to incomplete fix for CVE-2026-25521 (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-32304 and fix it if it is affected.

What it is: CVE-2026-32304 is a critical code injection vulnerability in locutusjs locutus, published on 12 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32304 exists.

Affected packages and fixed versions:
- locutus (npm): affected all versions; fixed in 3.0.14
- locutus (npm): affected all versions; fixed in 3.0.14

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-2026-32304/ (Markdown: https://insights.sbomify.com/CVE-2026-32304/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-32304
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-32304
- OSV: https://osv.dev/vulnerability/CVE-2026-32304

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-32304/
Summaries are generated and may contain mistakes; the official description above is the record.