# CVE-2026-56840: PraisonAI HTTPApproval dashboard XSS and auto-approval

Source: https://junglewise.ai/threats/cve-2026-56840-praisonai-httpapproval-dashboard-renders-tool-arguments-as-raw  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-23. Updated: 2026-10-23  
License: CC BY 4.0 with a link back

CVE-2026-56840 · Severity: high · CVSS 8.8 · Published 2026-10-23

PraisonAI is a multi-agent AI system that includes an approval mechanism to let humans review risky tool requests before execution. A flaw in the approval dashboard allows an attacker to inject malicious code that automatically approves dangerous tool requests, bypassing the safety control that would normally require human review.

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-2026-56840 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-56840 being exploited in the wild.

**How severe is CVE-2026-56840?** High severity, with a CVSS score of 8.8, published 23 October 2026.

**Which products and versions are affected?** Praisonai 4.5.2 to 4.6.57; praisonai (PyPI) ECOSYSTEM:introduced=4.5.2,fixed=4.6.59.

**Is there a fix for CVE-2026-56840?** Yes. praisonai (PyPI): upgrade to 4.6.59 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-56840 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-56840?** 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 4.6.59 or later

  ```sh
  pip install "praisonai>=4.6.59"
  ```


## Technical details

The HTTPApproval component renders pending tool approval arguments directly into dashboard HTML without HTML escaping, enabling stored XSS injection via tool arguments. When a human opens the approval URL, injected JavaScript executes in the dashboard origin and can POST to the /approve/{request_id}/decide endpoint to auto-approve the request. The vulnerability exists in src/praisonai/bots/_http_approval.py where _build_html() uses unescaped f-string interpolation for arguments and the page contains same-origin code that submits approvals.

## Affected products

- Praison PraisonAI 4.5.2 to 4.6.57

## Identifiers

- CVE-2026-56840
- GHSA-63v4-w882-g4x2
- PYSEC-2026-3503

## Timeline

- 2026-06-17: disclosed
- 2026-10-23: advisory: NVD published

## References

- [https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-63v4-w882-g4x2](https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-63v4-w882-g4x2)

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