Project Summary
OWASP ESAPI (The OWASP Enterprise Security API) is a free, open source, web application security control library that makes it easier for programmers to write lower-risk applications. The ESAPI for Java library is designed to make it easier for programmers to retrofit security into existing applications. ESAPI for Java also serves as a solid foundation for new development.
What does Legacy mean?
This is the legacy branch of ESAPI which means it is an actively maintained branch of the project, however feature development for this branch will not be done. Features that have already been scheduled for the 2.x branch will move forward, but the main focus will be working on the ESAPI 3.x branch.
In a Nutshell, esapi-java-legacy...
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has a well established, mature codebase
maintained by a average size development team
with stable Y-O-Y commits -
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took an estimated 10 years of effort (COCOMO model)
starting with its first commit in January, 2008
ending with its most recent commit 3 months ago
Quick Reference
BSD 3-clause "New" or "Revised" License
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Forbidden
Hold Liable
Use Trademarks
Required
Include Copyright
Include License
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
Did You Know...
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30 Day SummaryDec 15 2025 — Jan 14 2026
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12 Month SummaryJan 14 2025 — Jan 14 2026
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