A command line tool and library for transferring data with URL syntax, supporting HTTP, HTTPS, FTP, FTPS, GOPHER, TFTP, SCP, SFTP, SMB, TELNET, DICT, LDAP, LDAPS, FILE, IMAP, SMTP, POP3, RTSP and RTMP. libcurl offers a myriad of powerful features
C Python M4 Perl DIGITAL Command Language CMake Other
Latest commit 42a4cd4 Jul 19, 2017 @kdudka kdudka nss: fix a possible use-after-free in SelectClientCert()
... causing a SIGSEGV in showit() in case the handle used to initiate
the connection has already been freed.

This commit fixes a bug introduced in curl-7_19_5-204-g5f0cae803.

Reported-by: Rob Sanders
Bug: https://bugzilla.redhat.com/1436158
Failed to load latest commit information.
.github ISSUE_TEMPLATE: Add a comment not to file security issues on github Jul 11, 2017
CMake cmake: fix send/recv argument scanner for windows Jul 5, 2017
docs CURLOPT_POSTFIELDS.3: explain the 100-continue magic better Jul 7, 2017
include system.h: include winsock2.h before windows.h Jul 12, 2017
lib nss: fix a possible use-after-free in SelectClientCert() Jul 20, 2017
m4 curl-compilers.m4: disable warning spam with Cygwin's clang Jul 10, 2017
packages includes: remove curl/curlbuild.h and curl/curlrules.h Jun 14, 2017
projects build-wolfssl: Sync config with wolfSSL 3.11 May 31, 2017
scripts updatemanpages.pl: error out on too old git version Jun 2, 2017
src make: fix docs build on OpenBSD Jul 10, 2017
tests tests/server/resolve.c: fix deprecation warning Jul 18, 2017
winbuild winbuild: re-enable warning C4127 for curl tool Jul 14, 2017
.dir-locals.el Add .dir-locals and set c-basic-offset to 2. Dec 23, 2015
.gitattributes .gitattributes: force shell scripts to LF Apr 17, 2017
.gitignore test: add impacket for SMB testing Jul 4, 2017
.travis.yml travis: install libidn2 Jul 13, 2017
CHANGES CHANGES: spell fix, use correct path to script Feb 7, 2017
CMakeLists.txt cmake: offer CMAKE_DEBUG_POSTFIX when building with MSVC Jul 7, 2017
COPYING COPYING: update the generic copyright year range Jan 7, 2017
GIT-INFO CHANGES.0: removed Feb 7, 2017
MacOSX-Framework includes: remove curl/curlbuild.h and curl/curlrules.h Jun 14, 2017
Makefile.am make: build the docs subdir only from within src Jun 30, 2017
Makefile.dist VC: remove the makefile.vc6 build infra Jan 23, 2017
README URLs: follow GitHub project rename (also Travis CI) Feb 4, 2016
README.md README.md: show the coverall coverage on github Jun 6, 2017
RELEASE-NOTES RELEASE-NOTES: synced with be2c999 Jul 7, 2017
acinclude.m4 build: remove WIN32_LEAN_AND_MEAN from individual build systems Jul 11, 2017
appveyor.yml appveyor: enable CURL_WERROR on all builds Jul 6, 2017
buildconf includes: remove curl/curlbuild.h and curl/curlrules.h Jun 14, 2017
buildconf.bat includes: remove curl/curlbuild.h and curl/curlrules.h Jun 14, 2017
configure.ac configure: remove checks for 5 functions never used Jul 4, 2017
curl-config.in URLs: change all http:// URLs to https:// Feb 2, 2016
libcurl.pc.in URLs: change all http:// URLs to https:// Feb 2, 2016
maketgz maketgz: switch to -6e for xz Jun 23, 2017


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Curl is a command-line tool for transferring data specified with URL syntax. Find out how to use curl by reading the curl.1 man page or the MANUAL document. Find out how to install Curl by reading the INSTALL document.

libcurl is the library curl is using to do its job. It is readily available to be used by your software. Read the libcurl.3 man page to learn how!

You find answers to the most frequent questions we get in the FAQ document.

Study the COPYING file for distribution terms and similar. If you distribute curl binaries or other binaries that involve libcurl, you might enjoy the LICENSE-MIXING document.


If you have problems, questions, ideas or suggestions, please contact us by posting to a suitable mailing list.

All contributors to the project are listed in the THANKS document.


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Curl contains pieces of source code that is Copyright (c) 1998, 1999 Kungliga Tekniska Högskolan. This notice is included here to comply with the distribution terms.