---
title: "CVE-2026-91940: crawl4ai - Arbitrary File Write"
description: "crawl4ai < 0.9.3 contains an arbitrary file write vulnerability caused by improper validation of untrusted configuration fields in PDFContentScrapingStrategy, letting attackers write arbitrary files, exploit requires crafted config bodies."
url: https://panop.io/threat-heartbeat/CVE-2026-91940/
---

# CVE-2026-91940 crawl4ai - Arbitrary File Write

crawl4ai < 0.9.3 contains an arbitrary file write vulnerability caused by improper validation of untrusted configuration fields in PDFContentScrapingStrategy, letting attackers write arbitrary files, exploit requires crafted config bodies.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

Proof of concept available

Authentication

Not required

EPSS

0.46% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-91940)

## Details

Type

Arbitrary File Write

Impact

File System Write

CVSS vector

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

Published

15 September 2026

Updated

15 October 2026

Weakness

[CWE-22](https://cwe.mitre.org/data/definitions/22.html)

## Vendor fix

Update to version 0.9.3 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-91940](https://nvd.nist.gov/vuln/detail/CVE-2026-91940)
- [https://github.com/unclecode/crawl4ai/security/advisories/GHSA-xpp7-j28w-2gvx](https://github.com/unclecode/crawl4ai/security/advisories/GHSA-xpp7-j28w-2gvx)
- [https://www.vulncheck.com/advisories/crawl4ai-before-0.9.3-arbitrary-file-write-via-pdfcontentscrapingstrategy](https://www.vulncheck.com/advisories/crawl4ai-before-0.9.3-arbitrary-file-write-via-pdfcontentscrapingstrategy)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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