# CVE-2024-46946: LangChain Experimental Eval Injection vulnerability

> Attackers can execute arbitrary code via sympy.sympify in LLMSymbolicMathChain, requiring developers to upgrade the 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:** No
- **Published:** 19 Sep 2024
- **Updated:** 19 Sep 2024
- **Also known as:** GHSA-p2qj-r53j-h3xj, PYSEC-2026-374

## What is CVE-2024-46946?

CVE-2024-46946 is a critical code injection vulnerability in n/a, published on 19 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

langchain_experimental (aka LangChain Experimental) 0.1.17 through 0.3.0 for LangChain allows attackers to execute arbitrary code through sympy.sympify (which uses eval) in LLMSymbolicMathChain. LLMSymbolicMathChain was introduced in fcccde406dd9e9b05fc9babcbeb9ff527b0ec0c6 (2023-10-05).

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2024-46946?

3 open source packages ship an affected version, including langchain-experimental. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `langchain-experimental` | PyPI | From 0.1.17 to 0.3.0 | None |
| `langchain-experimental` | PyPI | From 0.1.17 to 0.3.0 | None |
| `langchain-experimental` | PyPI | From 0.1.17 to 0.3.0 | None |

Products: Langchain Langchain-Experimental.

## How do I fix CVE-2024-46946?

No fix has been published for CVE-2024-46946 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-46946 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-46946 exists.

## Other vulnerabilities in n/a

- [CVE-2024-27444](https://insights.sbomify.com/CVE-2024-27444/): LangChain Experimental vulnerable to arbitrary code execution (critical 9.8)
- [CVE-2024-21513](https://insights.sbomify.com/CVE-2024-21513/): langchain-experimental vulnerable to Arbitrary Code Execution (high 8.5)
- [CVE-2024-38459](https://insights.sbomify.com/CVE-2024-38459/): langchain_experimental Code Execution via Python REPL access (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-46946 and fix it if it is affected.

What it is: CVE-2024-46946 is a critical code injection vulnerability in n/a, published on 19 Sep 2024. 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-2024-46946 exists.

Affected packages and fixed versions:
- langchain-experimental (PyPI): affected from 0.1.17 up to 0.3.0; no fix listed
- langchain-experimental (PyPI): affected from 0.1.17 up to 0.3.0; no fix listed
- langchain-experimental (PyPI): affected from 0.1.17 up to 0.3.0; 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-2024-46946/ (Markdown: https://insights.sbomify.com/CVE-2024-46946/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-46946
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-46946
- OSV: https://osv.dev/vulnerability/CVE-2024-46946

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-46946/
Summaries are generated and may contain mistakes; the official description above is the record.