CVE-2026-91942
Published:September 15, 2026
Updated:September 22, 2026
crawl4ai before 0.9.3 contains a DOM-based cross-site scripting vulnerability in the Docker Playground UI that assigns untrusted crawl results to element.innerHTML. Attackers can craft malicious PDFs with event-handler markup to execute JavaScript in the Playground origin and steal API tokens from sessionStorage for authenticated API abuse.
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:
5.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
EPSS
Base Score:
0.22