Frank Fischer (@umblaetterer.bsky.social)

curl 8.18.0 Download curl from curl.se! ## Release presentation On January 7 2026, at 10:00 CET (09:00 UTC), there is a live-streamed release presentation of curl 8.18.0 done on twitch. The YouTube recording will be made available afterwards. ## Numbers the 272nd release 5 changes 63 days (total: 10,155) 391 bugfixes (total: 13,376) 758 commits (total: 37,486) 0 new public libcurl function (total: 100) 0 new curl_easy_setopt() option (total: 308) 0 new curl command line option (total: 273) 69 contributors, 36 new (total: 3,571) 37 authors, 14 new (total: 1,430) 6 security fixes (total: 176) ## Security This time there is no less than _six_ separate vulnerabilities announced. * CVE-2025-13034: skipping pinning check for HTTP/3 with GnuTLS * CVE-2025-14017: broken TLS options for threaded LDAPS * CVE-2025-14524: bearer token leak on cross-protocol redirect * CVE-2025-14819: OpenSSL partial chain store policy bypass * CVE-2025-15079: libssh global knownhost override * CVE-2025-15224: libssh key passphrase bypass without agent set ## Changes There are a few this time, mostly around dropping support for various dependencies: * drop support for VS2008 (Windows) * drop Windows CE / CeGCC support * drop support for GnuTLS < 3.6.5 * gnutls: implement CURLOPT_CAINFO_BLOB * openssl: bump minimum OpenSSL version to 3.0.0 ## Bugfixes See the release presentation video for a walk-through of some of the most important/interesting fixes done for this release, or go check out the full list in the changelog. https://daniel.haxx.se/blog/2026/01/07/curl-8-18-0/