3
I Use This!
Moderate Activity
Analyzed about 18 hours ago. based on code collected about 18 hours ago.

Project Summary

Knot DNS Resolver is a caching full resolver implementation written in C and LuaJIT, both a resolver library and a daemon. The core architecture is tiny and efficient, and provides a foundation and a state-machine like API for extensions. There are three modules built-in - iterator, validator, cache, and a few more are loaded by default. Most of the rich features are written in Lua(JIT) and C. Batteries are included, but optional.

Tags

dns dnssec networking recursor

In a Nutshell, Knot Resolver...

GNU General Public License v3.0 only
Permitted

Commercial Use

Modify

Distribute

Place Warranty

Use Patent Claims

Forbidden

Sub-License

Hold Liable

Required

Distribute Original

Disclose Source

Include Copyright

State Changes

Include License

Include Install Instructions

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

Poor security track-record
Favorable security track-record

Vulnerability Exposure Index

Many reported vulnerabilities
Few reported vulnerabilities

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About Project Security

Languages

C
62%
Lua
15%
Python
16%
12 Other
7%

30 Day Summary

Aug 11 2025 — Sep 10 2025

12 Month Summary

Sep 10 2024 — Sep 10 2025
  • 447 Commits
    Down -206 (31%) from previous 12 months
  • 9 Contributors
    Down -1 (10%) from previous 12 months

Static Analysis ( Generated by Coverity Scan for CZ-NIC/knot-resolver )

Repository URL: https://github.com/CZ-NIC/knot-resolver

Version: v6.0.15-23-gcc40fdb9

2025-09-09
Last Analyzed
189,528
Lines of Code Analyze
0.28
Defect Density

Defects by status for current build

136
Total defects
11
Outstanding
101
Fixed

CWE Top 25 defects

ID CWE-Name Number of Defects
190 Integer Overflow or Wraparound 1
676 Use of Potentially Dangerous Function 1