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CVE-2026-91941

Crawl4AI before 0.9.3 Denial of Service via PDFContentScrapingStrategy

CVSS 4.0 8.7 HIGHCVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-91941

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-91941

Published

crawl4ai

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "unclecode",
                    "product": "crawl4ai",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:pypi/crawl4ai",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "0.9.3"
                        },
                        {
                            "version": "0.9.3",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON