CeWL
Custom wordlist generator that spiders target websites to build organization-specific password candidate lists from site content and document metadata.
Technical Architecture & Overview
CeWL is a Ruby tool that spiders a given URL to a specified depth and returns a list of unique words found on the target site. It also extracts email addresses and usernames from document metadata, and can capture URL paths, subdomains, and domains. The generated wordlists can be fed into password crackers such as John the Ripper and hashcat.
Targeted Technical Use Cases
Building target-specific wordlists from an organization's own website content for authorized credential strength audits and password policy validation.
Evaluation & Trade-offs
Core Strengths
- +Configurable spidering depth with optional offsite following and path exclusion for targeted crawling.
- +Extracts email addresses and document author metadata alongside word lists for broader credential profiling.
- +Supports HTTP authentication, custom headers, and proxy configurations for authenticated crawling.
- +Packaged in Kali Linux and available as an official Docker image for portable deployment.
Trade-Offs & Limitations
- -No JavaScript rendering, so single-page applications and JS-driven content are not captured.
- -Large depth values with offsite following can drift onto unrelated domains, producing noisy wordlists.
- -Document metadata extraction requires the external exiftool application to be installed separately.
Defensive Security Application
Generating organization-specific candidate lists to verify employees are not using publicly visible company terminology as passwords during authorized credential audits.
Frequently Asked Questions
What is CeWL?→
CeWL is a Ruby tool that spiders a given URL to a specified depth and returns a list of unique words found on the target site. It also extracts email addresses and usernames from document metadata, and can capture URL paths, subdomains, and domains. The generated wordlists can be fed into password crackers such as John the Ripper and hashcat.
What is CeWL used for?→
Building target-specific wordlists from an organization's own website content for authorized credential strength audits and password policy validation.
What are the strengths of CeWL?→
- +Configurable spidering depth with optional offsite following and path exclusion for targeted crawling.
- +Extracts email addresses and document author metadata alongside word lists for broader credential profiling.
- +Supports HTTP authentication, custom headers, and proxy configurations for authenticated crawling.
- +Packaged in Kali Linux and available as an official Docker image for portable deployment.
What are the limitations of CeWL?→
- +No JavaScript rendering, so single-page applications and JS-driven content are not captured.
- +Large depth values with offsite following can drift onto unrelated domains, producing noisy wordlists.
- +Document metadata extraction requires the external exiftool application to be installed separately.
How is CeWL used defensively?→
Generating organization-specific candidate lists to verify employees are not using publicly visible company terminology as passwords during authorized credential audits.