CVE-2026-91941: high-severity vulnerability in unclecode crawl4ai
Crawl4AI before 0.9.3 Denial of Service via PDFContentScrapingStrategy
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.5%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
unclecode · crawl4aiRelated CVEs — unclecode crawl4ai
In the same product, most dangerous first.
CVE-2026-53753CRITICALCrawl4AI: AST Sandbox Escape via gi_frame.f_back Chain - Pre-Auth RCE in Docker APIEPSS 2.9%CVE-2026-53755HIGHCrawl4AI: SSRF via proxy settings in the Docker server bypasses the crawl-URL SSRF checkEPSS 1.6%CVE-2026-57572CRITICALCrawl4AI: Unauthenticated RCE via Chromium launch-argument injection in browser_config.extra_argsEPSS 0.9%CVE-2026-57571CRITICALCrawl4AI arbitrary file write via download filename path traversalEPSS 0.8%CVE-2026-91940HIGHcrawl4ai before 0.9.3 Arbitrary File Write via PDFContentScrapingStrategyEPSS 0.5%CVE-2026-115508HIGHCrawl4AI 0.7.0 before 0.9.5 ReDoS via /crawl Regex FieldsEPSS 0.5%