27
I Use This!
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Analyzed 5 months ago. based on code collected 5 months ago.

Project Summary

Kamailio is an open source SIP server application formerly named OpenSER. Starting with v3.0.0 it has merged its ancestor project, respectively SIP Express Router (SER). The project is managed by its community, released under GPLv2, and focusing to build a flexible and rock solid SIP server.

Among features: full RFC3261 implementation, support for IPv4, IPv6, UDP, TCP, TLS, SCTP, DNS SRV and NAPTR, Websockets for WebRTC, least cost routing, load balancing, AAA and prepaid billing, presence server, RCS/RCSe, embedded XACP server and MSRP relay, RADIUS, XMLRPC control interface, IMS extensions, MySQL, Postgres and many other DB backends, embedded interpreters for Lua, Perl, Python, C# and other languages, IMS extensions.

Tags

c carrier chat cluster communication ims kamailio linux messaging openser presence rcs router secure secureconnection server sip softswitch telecommunication telephony unix video voice voip

Badges

In a Nutshell, Kamailio (SIP Express Router)...

GNU General Public License v2.0 or later
Permitted

Commercial Use

Modify

Distribute

Place Warranty

Forbidden

Sub-License

Hold Liable

Required

Distribute Original

Disclose Source

Include Copyright

State Changes

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 )

There are no reported vulnerabilities

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
79%
XML
15%
19 Other
6%

30 Day Summary

Feb 22 2026 — Mar 24 2026

12 Month Summary

Mar 24 2025 — Mar 24 2026
  • 1502 Commits
    Down -392 (20%) from previous 12 months
  • 71 Contributors
    Down -3 (4%) from previous 12 months

Static Analysis ( Generated by Coverity Scan for kamailio/kamailio )

Repository URL: https://github.com/kamailio/kamailio

Version: 6.2-dev

2026-01-27
Last Analyzed
1,545,458
Lines of Code Analyze
0.31
Defect Density

Defects by status for current build

4,256
Total defects
477
Outstanding
3,738
Fixed

CWE Top 25 defects

ID CWE-Name Number of Defects
120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') 9
190 Integer Overflow or Wraparound 44
676 Use of Potentially Dangerous Function 5