---
id: CVE-2026-91941
title: >-
  Crawl4AI before 0.9.3 contains an uncontrolled resource consumption
  vulnerability in PDFContentScrapingStrategy that allows untrusted clients to
  cause denial of service
summary: >-
  Crawl4AI before 0.9.3 contains an uncontrolled resource consumption
  vulnerability in PDFContentScrapingStrategy that allows untrusted clients to
  cause denial of service. Attackers can select the PDF scraping strategy in
  POST requests to …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
vendor: unclecode
product: crawl4ai
affected:
  - crawl4ai < 0.9.3
published: '2026-09-15'
updated: '2026-09-20'
sourceUpdated: '2026-09-20T01:16:33.873'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91941'
references:
  - url: >-
      https://github.com/unclecode/crawl4ai/security/advisories/GHSA-v2rm-hvrj-2x9q
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/crawl4ai-before-0.9.3-denial-of-service-via-pdfcontentscrapingstrategy
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-20T00:28:11.204154Z'
epss: 0.00488
epssPercentile: 0.39314
ingestedAt: '2026-09-15T15:39:12.925Z'
---

## Overview

Crawl4AI before 0.9.3 contains an uncontrolled resource consumption vulnerability in PDFContentScrapingStrategy that allows untrusted clients to cause denial of service. Attackers can select the PDF scraping strategy in POST requests to download large remote PDFs without size or page limits, exhausting disk, CPU, and bandwidth on shared workers.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.