# CVE-2026-57112: PraisonAI legacy SSE endpoint CORS and authentication bypass

Source: https://junglewise.ai/threats/cve-2026-57112-praisonai-legacy-sse-endpoint-cors-and-authentication-bypass  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-15. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-57112 · Severity: high · CVSS 8.3 · Published 2026-09-15

PraisonAI is a multi-agent system that orchestrates AI tasks through tool execution. Legacy HTTP endpoints in versions before 1.6.59 (agents) and 4.6.59 (main product) lack proper authentication and cross-origin controls, allowing a malicious website to use DNS rebinding techniques to invoke tools on the server with the privileges of the user running the service. This could enable unauthorized command execution, data exfiltration, or other harmful operations depending on available tools.

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

## Quick answers

**Is CVE-2026-57112 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-57112 being exploited in the wild.

**How severe is CVE-2026-57112?** High severity, with a CVSS score of 8.3, published 15 September 2026.

**Which products and versions are affected?** praisonai (PyPI) ECOSYSTEM:introduced=3.10.0,fixed=4.6.59; praisonaiagents (PyPI) ECOSYSTEM:introduced=0.6.0,fixed=1.6.59.

**Is there a fix for CVE-2026-57112?** Yes. praisonai (PyPI): upgrade to 4.6.59 or later; praisonaiagents (PyPI): upgrade to 1.6.59 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-57112 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-57112?** Check whether you run praisonai (PyPI) or praisonaiagents (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"
  ```

- praisonaiagents (PyPI): upgrade to 1.6.59 or later

  ```sh
  pip install "praisonaiagents>=1.6.59"
  ```


## Technical details

The vulnerability is a cross-origin request forgery (CORS bypass) combined with weak access controls in the ToolsMCPServer.run_sse() method in src/praisonai-agents/praisonaiagents/mcp/mcp_server.py. The legacy /sse and /messages/ endpoints mount SseServerTransport without enforcing Host, Origin, or authentication headers. An attacker on a malicious website can exploit DNS rebinding to redirect the target's browser to a local or internal SSE server, supply arbitrary Host and Origin headers, enumerate registered tools via the HTTP interface, and invoke them with the server's user privileges. The newer Streamable HTTP transport correctly rejects hostile origins, confirming the flaw is specific to the legacy SSE wrapper. Patches were released in praisonaiagents 1.6.59 and PraisonAI 4.6.59.

## Affected products

- PraisonAI PraisonAI 3.10.0 to 4.6.58
- PraisonAI praisonaiagents 0.6.0 to 1.6.58

## Identifiers

- CVE-2026-57112
- GHSA-vmf9-xx9w-86wx
- PYSEC-2026-3521
- PYSEC-2026-3534

## Timeline

- 2026-09-15: disclosed: Published on NVD
- 2026-06-13: patched: Patch committed (input validation and access control hardening)
- 2026-06-17: patched: PraisonAI v4.6.59 released

## References

- [https://github.com/MervinPraison/PraisonAI/commit/2adfe7e8323f6deec66925cf15a885b6238895e9](https://github.com/MervinPraison/PraisonAI/commit/2adfe7e8323f6deec66925cf15a885b6238895e9)
- [https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.59](https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.59)

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