# CVE-2025-46726: Langroid Vulnerable to XXE Injection via XMLToolMessage

> Attackers can exploit XMLToolMessage to cause denial of service or read sensitive local files via XXE injection in Langroid.

- **Severity:** High 7.8 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 5 May 2025
- **Updated:** 5 May 2025
- **Also known as:** GHSA-pw95-88fg-3j6f, PYSEC-2026-1532

## What is CVE-2025-46726?

CVE-2025-46726 is a high-severity vulnerability in langroid, published on 5 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Langroid is a framework for building large-language-model-powered applications. Prior to version 0.53.4, a LLM application leveraging `XMLToolMessage` class may be exposed to untrusted XML input that could result in DoS and/or exposing local files with sensitive information. Version 0.53.4 fixes the issue.

Weakness: CWE-611 (Improper Restriction of XML External Entity Reference)

## Which versions are affected by CVE-2025-46726?

3 open source packages ship an affected version, including langroid. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `langroid` | PyPI | All versions | 0.53.4 |
| `langroid` | PyPI | All versions | 0.53.4 |
| `langroid` | PyPI | All versions | 0.53.4 |

Products: Langroid Langroid.

## How do I fix CVE-2025-46726?

Upgrade langroid to 0.53.4 or later.

## Is CVE-2025-46726 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-46726 exists.

## Other vulnerabilities in langroid

- [CVE-2025-46724](https://insights.sbomify.com/CVE-2025-46724/): Langroid has a Code Injection vulnerability in TableChatAgent (critical 9.8)
- [CVE-2026-25481](https://insights.sbomify.com/CVE-2026-25481/): Langroid has WAF Bypass Leading to RCE in TableChatAgent (critical 9.4)
- [CVE-2025-46725](https://insights.sbomify.com/CVE-2025-46725/): Langroid has a Code Injection vulnerability in LanceDocChatAgent through vector_store (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-46726 and fix it if it is affected.

What it is: CVE-2025-46726 is a high-severity vulnerability in langroid, published on 5 May 2025. 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-2025-46726 exists.

Affected packages and fixed versions:
- langroid (PyPI): affected all versions; fixed in 0.53.4
- langroid (PyPI): affected all versions; fixed in 0.53.4
- langroid (PyPI): affected all versions; fixed in 0.53.4

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-2025-46726/ (Markdown: https://insights.sbomify.com/CVE-2025-46726/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-46726
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-46726
- OSV: https://osv.dev/vulnerability/CVE-2025-46726

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-46726/
Summaries are generated and may contain mistakes; the official description above is the record.