Vulnerability · Published Sep 15, 2026 · Assigned by VulnCheck
CVE-2026-91941Crawl4AI before 0.9.3 Denial of Service via PDFContentScrapingStrategy
High 7.5
In plain English
A high-severity uncontrolled resource consumption in crawl4ai from unclecode. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 57.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- GitHub Security Advisory (GHSA-v2rm-hvrj-2x9q) vendor-advisory
- VulnCheck Advisory: Crawl4AI before 0.9.3 Denial of Service via PDFContentScrapingStrategy third-party-advisory