CVE-2026-39305: PraisonAI Path Traversal Vulnerability
CRITICALCVE-2026-39305 is a CRITICAL (CVSS 9.0) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting PraisonAI libraries in the PyPI ecosystem. The issue involves praisonai vulnerable to arbitrary file write / path traversal in action orchestrator. Remediation is available by upgrading affected packages to version 4.5.113.
CVE-2026-39305 at a Glance
Security Impact
CVSS: 9.0
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H).
How to Fix CVE-2026-39305
To remediate this vulnerability, upgrade all affected PraisonAI dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
pip install PraisonAI>=4.5.113Run the following command in your project directory to verify that all resolved dependencies use the patched release:
pip show PraisonAIHow to Check if You Are Affected
To determine whether your Python environment is affected by CVE-2026-39305, inspect your installed packages using pip:
pip show PraisonAIAnalyze the terminal output to locate any version of PraisonAI in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.5.113), your application is affected.
Note: The pip show PraisonAI command checks currently installed packages in your active Python environment.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In PraisonAI, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-39305 Affected PraisonAI Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
PraisonAI
|
PyPI |
< 4.5.113
|
4.5.113
|
References
Frequently Asked Questions
What is CVE-2026-39305?
Which PraisonAI versions are affected?
What version fixes CVE-2026-39305?
Is PraisonAI affected?
What is the CVSS score of CVE-2026-39305?
What CWE is associated with CVE-2026-39305?
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Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-jfxc-v5g9-38xr",
"modified" : "2026-04-07T22:10:01Z",
"published" : "2026-04-06T23:09:03Z",
"aliases" : [ "CVE-2026-39305" ],
"summary" : "PraisonAI Vulnerable to Arbitrary File Write / Path Traversal in Action Orchestrator",
"details" : "The Action Orchestrator feature contains a Path Traversal vulnerability that allows an attacker (or compromised agent) to write to arbitrary files outside of the configured workspace directory. By supplying relative path segments (`../`) in the target path, malicious actions can overwrite sensitive system files or drop executable payloads on the host.\n\n### Details\nLocation: `src/praisonai/praisonai/cli/features/action_orchestrator.py` (Lines 402, 409, 423)\n\nVulnerable Code snippet:\n```python\ntarget = workspace / step.target\n```\n\nIn the `_apply_step` method, paths are constructed by concatenating the `workspace` path with a user-supplied `step.target` string: `target = workspace / step.target`. The code fails to resolve and validate that the final absolute path remains within the bounds of the `workspace` directory. When processing `FILE_CREATE` or `FILE_EDIT` actions, this flaw permits arbitrary file modification.\n\n### PoC\nConstruct a malicious `ActionStep` payload with path traversal characters:\n\n```python\nfrom praisonai.cli.features.action_orchestrator import ActionStep, ActionType, ActionStatus\n\n# Payload targeting a file outside the workspace\nstep = ActionStep(\n id=\"test_traversal\",\n action_type=ActionType.FILE_CREATE,\n description=\"Malicious file write\",\n target=\"../../../../../../../tmp/orchestrator_pwned.txt\",\n params={\"content\": \"pwned\"},\n status=ActionStatus.APPROVED\n)\n\n# When the orchestrator applies this step, it writes to the traversed path\n# _apply_step(step)\n```\n\n### Impact\nThis is an Arbitrary File Write vulnerability. Anyone running the Action Orchestrator to apply modifications is vulnerable. A malicious prompt could trick the agent into generating a plan that overwrites critical files (e.g., `~/.ssh/authorized_keys`, `.bashrc`) leading to Remote Code Execution (RCE) or system corruption.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "PyPI",
"name" : "PraisonAI"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "4.5.113"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 4.5.112"
}
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-jfxc-v5g9-38xr"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-39305"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/MervinPraison/PraisonAI"
}, {
"type" : "WEB",
"url" : "https://github.com/MervinPraison/PraisonAI/releases/tag/v4.5.113"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-22" ],
"severity" : "CRITICAL",
"github_reviewed" : true,
"github_reviewed_at" : "2026-04-06T23:09:03Z",
"nvd_published_at" : "2026-04-07T17:16:36Z"
}
}