Project Summary
command line tool and library
for transferring data with URLs
Supports...
DICT, FILE, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, Telnet and TFTP. curl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, HTTP/2, HTTP/3, cookies, user+password authentication (Basic, Plain, Digest, CRAM-MD5, NTLM, Negotiate and Kerberos), file transfer resume, proxy tunneling and more.
Badges
In a Nutshell, cURL...
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has a well established, mature codebase
maintained by a very large development team
with increasing Y-O-Y commits -
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took an estimated 111 years of effort (COCOMO model)
starting with its first commit in December, 1989
ending with its most recent commit 4 days ago
MIT License
Permitted
Commercial Use
Modify
Distribute
Sub-License
Private Use
Forbidden
Hold Liable
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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55% of companies leverage OSS for production infrastructure
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learn about Open Hub updates and features on the Open Hub blog
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nearly 1 in 3 companies have no process for identifying, tracking, or remediating known open source vulnerabilities
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data presented on the Open Hub is available through our API
30 Day SummaryJun 14 2026 — Jul 14 2026
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12 Month SummaryJul 14 2025 — Jul 14 2026
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Static Analysis ( Generated by Coverity Scan for curl )
Repository URL: https://github.com/curl/curl
Version: curl-8_21_0-121-g34bc5b60bc
- 2026-07-13
- Last Analyzed
- 214,207
- Lines of Code Analyze
- 0.0
- Defect Density
Defects by status for current build
- 329
- Total defects
- 0
- Outstanding
- 226
- Fixed
CWE Top 25 defects
No top 25 CWE defects were found.