CVE-2026-91941
Published:September 15, 2026
Updated:September 22, 2026
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 Packages
crawl4ai (CONDA):
Affected version(s) >=0.5.0.post1 <0.9.3Fix Suggestion:
Update to version 0.9.3https://github.com/unclecode/crawl4ai.git (GITHUB):
Affected version(s) >=v0.5.0.post1 <v0.9.3Fix Suggestion:
Update to version v0.9.3crawl4ai (PYTHON):
Affected version(s) >=0.5.0 <0.9.3Fix Suggestion:
Update to version 0.9.3Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncontrolled Resource Consumption
EPSS
Base Score:
0.38