# CVE-2026-39307: PraisonAI has an Arbitrary File Write (Zip Slip) in Templates Extraction

> Attackers can write arbitrary files outside the intended directory via malicious template archives, potentially leading to code execution or data modification.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 7 Apr 2026
- **Updated:** 9 Apr 2026
- **Also known as:** GHSA-4ph2-f6pf-79wv, PYSEC-2026-2899

## What is CVE-2026-39307?

CVE-2026-39307 is a high-severity path traversal vulnerability in MervinPraison PraisonAI, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

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.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-39307?

3 open source packages ship an affected version, including praisonai and PraisonAI. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `praisonai` | PyPI | All versions | 4.5.113 |
| `praisonai` | PyPI | All versions | 4.5.113 |
| `PraisonAI` | PyPI | All versions | 4.5.113 |

Products: Praison Praisonai.

## How do I fix CVE-2026-39307?

Upgrade praisonai to 4.5.113 or later.

## Is CVE-2026-39307 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-39307 exists.

## Other vulnerabilities in MervinPraison PraisonAI

- [CVE-2026-39888](https://insights.sbomify.com/CVE-2026-39888/): PraisonAIAgents has a sandbox escape via exception frame traversal in `execute_code` (subprocess mode) (critical 10.0)
- [CVE-2026-41497](https://insights.sbomify.com/CVE-2026-41497/): Incomplete fix for CVE-2026-34935: Command Injection in MervinPraison/PraisonAI (critical 9.8)
- [CVE-2026-40288](https://insights.sbomify.com/CVE-2026-40288/): PraisonAI: Critical RCE via `type: job` workflow YAML (critical 9.8)
- [CVE-2026-39890](https://insights.sbomify.com/CVE-2026-39890/): PraisonAI Affected by Remote Code Execution via YAML Deserialization in Agent Definition Loading (critical 9.8)
- [CVE-2026-34934](https://insights.sbomify.com/CVE-2026-34934/): PraisonAI: Second-Order SQL Injection in `get_all_user_threads` (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-39307 and fix it if it is affected.

What it is: CVE-2026-39307 is a high-severity path traversal vulnerability in MervinPraison PraisonAI, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-39307 exists.

Affected packages and fixed versions:
- praisonai (PyPI): affected all versions; fixed in 4.5.113
- praisonai (PyPI): affected all versions; fixed in 4.5.113
- PraisonAI (PyPI): affected all versions; fixed in 4.5.113

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-39307/ (Markdown: https://insights.sbomify.com/CVE-2026-39307/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-39307
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-39307
- OSV: https://osv.dev/vulnerability/CVE-2026-39307

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-39307/
Summaries are generated and may contain mistakes; the official description above is the record.