# CVE-2026-40149: PraisonAI unauthenticated allowlist manipulation in tool approval system

Source: https://junglewise.ai/threats/cve-2026-40149-praisonai-unauthenticated-allowlist-manipulation-in-tool-approval  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-09. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2026-40149 · Severity: high · CVSS 7.9 · Published 2026-04-09

PraisonAI, a framework for managing AI agents, contains a security flaw in its tool approval system. By default, the system allows anyone with local access to modify the list of 'approved' tools without a password. This allows an attacker to force the AI to automatically run dangerous commands, such as deleting files or executing system code, bypassing the safety checks intended to require human approval.

Technologies: [Praisonai](https://junglewise.ai/threats/technologies/praisonai), [praisonai (PyPI)](https://junglewise.ai/threats/technologies/pypi-praisonai). Vendors: [Praison](https://junglewise.ai/threats/vendors/praison), [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2026-40149 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40149 being exploited in the wild.

**How severe is CVE-2026-40149?** High severity, with a CVSS score of 7.9, published 9 April 2026.

**Which products and versions are affected?** praisonai (PyPI) ECOSYSTEM:introduced=0,fixed=4.5.128.

**Is there a fix for CVE-2026-40149?** Yes. praisonai (PyPI): upgrade to 4.5.128 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-40149 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-40149?** Check whether you run Praisonai or praisonai (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- praisonai (PyPI): upgrade to 4.5.128 or later

  ```sh
  pip install "praisonai>=4.5.128"
  ```


## Technical details

An authentication bypass exists in PraisonAI's gateway component due to the `_check_auth()` function returning `None` when `auth_token` is not configured (the default state). An attacker can send a POST request to the `/api/approval/allow-list` endpoint to add arbitrary tool names, such as `shell_exec` or `file_write`, to the `ExecApprovalManager` allowlist. Because the `register()` function in `exec_approval.py` prioritizes the allowlist as a 'fast path' for auto-approval, subsequent agent requests to use these tools will execute immediately without human review. This vulnerability is primarily exploitable by local attackers or via SSRF/CORS-related attacks. The issue is fixed in version 4.5.128.

## Affected products

- MervinPraison PraisonAI < 4.5.128

## Identifiers

- CVE-2026-40149
- GHSA-4wr3-f4p3-5wjh
- PYSEC-2026-2901

## Timeline

- 2026-04-09: disclosed
- 2026-04-10: advisory
- 2026-04-10: patched: Fixed in version 4.5.128

## References

- [https://api.github.com/users/offset](https://api.github.com/users/offset)
- [https://github.com/offset](https://github.com/offset)
- [https://api.github.com/users/offset/gists%7B/gist_id%7D](https://api.github.com/users/offset/gists%7B/gist_id%7D)
- [https://api.github.com/users/offset/repos](https://api.github.com/users/offset/repos)
- [https://avatars.githubusercontent.com/u/114768995?v=4](https://avatars.githubusercontent.com/u/114768995?v=4)
- [https://api.github.com/users/offset/events%7B/privacy%7D](https://api.github.com/users/offset/events%7B/privacy%7D)

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