Vulnerability-Lookup

PYSEC-2026-477

Vulnerability from pysec - Published: 2026-06-29 11:50 - Updated: 2026-07-01 20:23

Details

praisonai workflow run <file.yaml> loads untrusted YAML and if type: job executes steps through JobWorkflowExecutor in job_workflow.py.

This supports: - run: → shell command execution via subprocess.run() - script: → inline Python execution via exec() - python: → arbitrary Python script execution

A malicious YAML file can execute arbitrary host commands.

Affected Code

workflow.py → action_run()
job_workflow.py → _exec_shell(), _exec_inline_python(), _exec_python_script()

PoC

Create exploit.yaml:

type: job
 name: exploit
steps:
  - name: write-file
    run: python -c "open('pwned.txt','w').write('owned')"

Run:

praisonai workflow run exploit.yaml

Reproduction Steps

Save the YAML above as exploit.yaml.
Execute praisonai workflow run exploit.yaml.
Confirm pwned.txt appears in the working directory.

### Impact Remote or local attacker-supplied workflow YAML can execute arbitrary host commands and code, enabling full system compromise in CI or shared deployment contexts.

Reporter: Lakshmikanthan K (letchupkt)

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impacted products

Name	purl
praisonai	pkg:pypi/praisonai

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.5.138"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "praisonai",
        "purl": "pkg:pypi/praisonai"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.5.139"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0.1",
        "0.0.10",
        "0.0.11",
        "0.0.12",
        "0.0.13",
        "0.0.14",
        "0.0.15",
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        "0.0.3",
        "0.0.30",
        "0.0.31",
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        "0.0.59rc11",
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        "0.0.59rc7",
        "0.0.59rc8",
        "0.0.59rc9",
        "0.0.6",
        "0.0.61",
        "0.0.64",
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        "4.5.74",
        "4.5.76",
        "4.5.77",
        "4.5.78",
        "4.5.79",
        "4.5.8",
        "4.5.80",
        "4.5.81",
        "4.5.82",
        "4.5.83",
        "4.5.85",
        "4.5.87",
        "4.5.88",
        "4.5.89",
        "4.5.9",
        "4.5.90",
        "4.5.93",
        "4.5.94",
        "4.5.95",
        "4.5.96",
        "4.5.97",
        "4.5.98"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-40288",
    "GHSA-vc46-vw85-3wvm"
  ],
  "details": "`praisonai workflow run \u003cfile.yaml\u003e` loads untrusted YAML and if `type: job` executes steps through `JobWorkflowExecutor` in job_workflow.py.\n\nThis supports:\n - `run:` \u2192 shell command execution via `subprocess.run()`\n- `script:` \u2192 inline Python execution via `exec()`\n- `python:` \u2192 arbitrary Python script execution\n \nA malicious YAML file can execute arbitrary host commands.\n\n### Affected Code\n - workflow.py \u2192 `action_run()`\n- job_workflow.py \u2192 `_exec_shell()`, `_exec_inline_python()`, `_exec_python_script()`\n\n### PoC\nCreate `exploit.yaml`:\n\n```yaml\ntype: job\n name: exploit\nsteps:\n  - name: write-file\n    run: python -c \"open(\u0027pwned.txt\u0027,\u0027w\u0027).write(\u0027owned\u0027)\"\n```\n\nRun:\n\n```bash\npraisonai workflow run exploit.yaml\n```\n\n### Reproduction Steps\n1. Save the YAML above as `exploit.yaml`.\n2. Execute `praisonai workflow run exploit.yaml`.\n3. Confirm `pwned.txt` appears in the working directory.\n\n ### Impact\nRemote or local attacker-supplied workflow YAML can execute arbitrary host commands and code, enabling full system compromise in CI or shared deployment contexts.\n\n**Reporter:** Lakshmikanthan K (letchupkt)",
  "id": "PYSEC-2026-477",
  "modified": "2026-07-01T20:23:01.747547Z",
  "published": "2026-06-29T11:50:46.038816Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-vc46-vw85-3wvm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40288"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/MervinPraison/PraisonAI"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MervinPraison/PraisonAI/releases/tag/v4.5.139"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/praisonai"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-vc46-vw85-3wvm"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "PraisonAI has critical RCE via `type: job` workflow YAML"
}

CVE-2026-40288 (GCVE-0-2026-40288)

Vulnerability from cvelistv5 – Published: 2026-04-14 03:00 – Updated: 2026-04-14 15:57

Title

PraisonAI: Critical RCE via `type: job` workflow YAML

Summary

PraisonAI is a multi-agent teams system. In versions below 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents, the workflow engine is vulnerable to arbitrary command and code execution through untrusted YAML files. When praisonai workflow run <file.yaml> loads a YAML file with type: job, the JobWorkflowExecutor in job_workflow.py processes steps that support run: (shell commands via subprocess.run()), script: (inline Python via exec()), and python: (arbitrary Python script execution)—all without any validation, sandboxing, or user confirmation. The affected code paths include action_run() in workflow.py and _exec_shell(), _exec_inline_python(), and _exec_python_script() in job_workflow.py. An attacker who can supply or influence a workflow YAML file (particularly in CI pipelines, shared repositories, or multi-tenant deployment environments) can achieve full arbitrary command execution on the host system, compromising the machine and any accessible data or credentials. This issue has been fixed in versions 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/MervinPraison/PraisonAI/securi…	x_refsource_CONFIRM

Impacted products

2 products

Vendor	Product	Version
MervinPraison	PraisonAI	Affected: < 4.5.139
MervinPraison	praisonaiagents	Affected: < 1.5.140

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-40288",
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          "value": "PraisonAI is a multi-agent teams system. In versions below 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents, the workflow engine is vulnerable to arbitrary command and code execution through untrusted YAML files. When praisonai workflow run \u003cfile.yaml\u003e loads a YAML file with type: job, the JobWorkflowExecutor in job_workflow.py processes steps that support run: (shell commands via subprocess.run()), script: (inline Python via exec()), and python: (arbitrary Python script execution)\u2014all without any validation, sandboxing, or user confirmation. The affected code paths include action_run() in workflow.py and _exec_shell(), _exec_inline_python(), and _exec_python_script() in job_workflow.py. An attacker who can supply or influence a workflow YAML file (particularly in CI pipelines, shared repositories, or multi-tenant deployment environments) can achieve full arbitrary command execution on the host system, compromising the machine and any accessible data or credentials. This issue has been fixed in versions 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents."
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      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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              "type": "CWE"
            }
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        {
          "descriptions": [
            {
              "cweId": "CWE-94",
              "description": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)",
              "lang": "en",
              "type": "CWE"
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GHSA-VC46-VW85-3WVM

Vulnerability from github – Published: 2026-04-10 19:32 – Updated: 2026-04-14 21:54

Summary

PraisonAI has critical RCE via `type: job` workflow YAML

Details

praisonai workflow run <file.yaml> loads untrusted YAML and if type: job executes steps through JobWorkflowExecutor in job_workflow.py.

This supports: - run: → shell command execution via subprocess.run() - script: → inline Python execution via exec() - python: → arbitrary Python script execution

A malicious YAML file can execute arbitrary host commands.

Affected Code

workflow.py → action_run()
job_workflow.py → _exec_shell(), _exec_inline_python(), _exec_python_script()

PoC

Create exploit.yaml:

type: job
name: exploit
steps:
  - name: write-file
    run: python -c "open('pwned.txt','w').write('owned')"

Run:

praisonai workflow run exploit.yaml

Reproduction Steps

Save the YAML above as exploit.yaml.
Execute praisonai workflow run exploit.yaml.
Confirm pwned.txt appears in the working directory.

Impact

Remote or local attacker-supplied workflow YAML can execute arbitrary host commands and code, enabling full system compromise in CI or shared deployment contexts.

Reporter: Lakshmikanthan K (letchupkt)

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.5.139"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "praisonaiagents"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.5.140"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.5.138"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "PraisonAI"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.5.139"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
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  ],
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      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-10T19:32:48Z",
    "nvd_published_at": "2026-04-14T04:17:12Z",
    "severity": "CRITICAL"
  },
  "details": "`praisonai workflow run \u003cfile.yaml\u003e` loads untrusted YAML and if `type: job` executes steps through `JobWorkflowExecutor` in job_workflow.py.\n\nThis supports:\n- `run:` \u2192 shell command execution via `subprocess.run()`\n- `script:` \u2192 inline Python execution via `exec()`\n- `python:` \u2192 arbitrary Python script execution\n\nA malicious YAML file can execute arbitrary host commands.\n\n### Affected Code\n- workflow.py \u2192 `action_run()`\n- job_workflow.py \u2192 `_exec_shell()`, `_exec_inline_python()`, `_exec_python_script()`\n\n### PoC\nCreate `exploit.yaml`:\n\n```yaml\ntype: job\nname: exploit\nsteps:\n  - name: write-file\n    run: python -c \"open(\u0027pwned.txt\u0027,\u0027w\u0027).write(\u0027owned\u0027)\"\n```\n\nRun:\n\n```bash\npraisonai workflow run exploit.yaml\n```\n\n### Reproduction Steps\n1. Save the YAML above as `exploit.yaml`.\n2. Execute `praisonai workflow run exploit.yaml`.\n3. Confirm `pwned.txt` appears in the working directory.\n\n### Impact\nRemote or local attacker-supplied workflow YAML can execute arbitrary host commands and code, enabling full system compromise in CI or shared deployment contexts.\n\n**Reporter:** Lakshmikanthan K (letchupkt)",
  "id": "GHSA-vc46-vw85-3wvm",
  "modified": "2026-04-14T21:54:30Z",
  "published": "2026-04-10T19:32:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-vc46-vw85-3wvm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40288"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/MervinPraison/PraisonAI"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MervinPraison/PraisonAI/releases/tag/v4.5.139"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "PraisonAI has critical RCE via `type: job` workflow YAML"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

PYSEC-2026-477

Affected Code

PoC

Reproduction Steps

CVE-2026-40288 (GCVE-0-2026-40288)

GHSA-VC46-VW85-3WVM

Affected Code

PoC

Reproduction Steps

Impact

Tags

Sightings

Nomenclature