# curl 8.15.0

- Product: curl (https://whatsnew.fyi/product/curl)
- Vendor: curl
- Date: 2025-07-16
- Version: 8.15.0
- Original notes: https://curl.se/ch/8.15.0.html
- Permalink: https://whatsnew.fyi/product/curl/releases/8.15.0
- Labels: Platforms: Desktop

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **removed** — Remove support for Secure Transport and BearSSL TLS backends
- **fixed** — Accept 'clear' in altsvc without semicolon
- **fixed** — Free the previous name before strdup'ing the new in asyn-thrdd
- **fixed** — Detect and link brotlicommon library for brotli in autotools
- **changed** — Change bufq read/write signatures
- **removed** — Remove the unused Curl_bufq_unwrite function
- **changed** — Assume sys/socket.h and sys/time.h on non-Windows
- **changed** — Make CURL_IPRESOLVE_* symbols defined as longs
- **changed** — Make CURLSSLOPT_* symbols defined as longs
- **removed** — Remove the RESERVED error codes from curl.h
- **changed** — Implement non-blocking STDIN read on Windows
- **fixed** — Make sure lines end with newline in curl_get_line
- **fixed** — Make SFTP handle a path like /~ properly
- **added** — Provide the 'digest' feature in curlinfo
- **fixed** — Fix build with disabled digest auth
- **fixed** — Fix prequotes for a directory in URL in ftp
- **fixed** — Fix file handle leaks in h2_serverpush reported by clang-tidy
- **fixed** — Fix query of concurrent streams in h3
- **fixed** — Report handshake with version and cipher as for TCP connections in http/3
- **fixed** — Do not delay RST send on aborted transfer in http2
- **fixed** — Protect against null deref in http_ntlm

curl / Docs / Releases / Changes in 8.15.0
Related: Daily Snapshots Source repo Release log Pending Release
🠰 8.14.1 all changes 8.16.0 🠲
#### Changes in 8.15.0 - July 16 2025
8.15.0
8.15.0
Changes:
- TLS: remove support for Secure Transport and BearSSL
Bugfixes:
- altsvc: accept 'clear' without semicolon as well
- asyn-ares: remove redundant NULL check
- asyn-thrdd: free the previous name before strdup'ing the new
- autotools: detect and link `brotlicommon` library for brotli
- autotools: drop `$top_builddir/src` from src header path
- autotools: drop headers from src mk-unity rules (fixup)
- autotools: drop no longer necessary `--srcdir` unity options
- autotools: drop redundant `Makefile.inc` from `EXTRA_DIST` in src
- autotools: simplify configuration in tests, examples
- bufq: change read/write signatures
- bufq: remove the unused Curl_bufq_unwrite function
- build: assume `sys/socket.h`, `sys/time.h` on non-Windows (as in `curl/curl.h`)
- build: drop `HAVE_SYS_SOCKET_H` and `HAVE_SYS_TIME_H` macros
- build: drop explicit curlx from hdr paths, refer headers with `curlx/` prefix
- build: drop unused variables in tests
- build: fix libcurltool with cmake and tunits, related tidy-ups
- build: split `.c` and `.h` file lists in tests
- build: stop checking for `sys/stat.h`
- build: stubgss tidy-ups (in tests)
- build: sync build scripts between client/libtest
- build: tidy up `Makefile.inc` use in lib and src
- build: tidy up header paths, use srcdir where possible
- cf-socket: make socket data_pending a nop
- checksrc-all: rewrite in Perl, remove `checksrc.bat`
- checksrc: reduce exceptions, apply again to curlx
- cmake/FindGSS: fix processing C header path options
- cmake/FindGSS: initialize result variables
- cmake: `curl_add_clang_tidy_test_target` tidy-ups
- cmake: build `stubgss` library for libtests to match autotools
- cmake: check USE_WINDOWS_SSPI when adding secur32 to CURL_LIBS
- cmake: configure c-ares header directory in project root (was: lib)
- cmake: document OpenSSL and ngtcp2 crypto lib custom variables
- cmake: drop never propagated C macros
- cmake: drop passing redundant `CURL_STATICLIB` in examples and clients
- cmake: drop redundant macro from test clients
- cmake: drop reference to future variable
- cmake: enable soversion by default for OpenHarmony OS
- cmake: fix `curl_add_clang_tidy_test_target` when no `-D` option
- cmake: fix generator expression in docs/examples
- cmake: gather options recursively in `curl_add_clang_tidy_test_target`
- cmake: make docs depend on support files
- cmake: move `OUTPUT` argument in the `add_custom_command()` line
- cmake: omit clang-tidy on internal libs curlu and curltool
- cmake: replace `cmakelint` with `cmake-lint` from `cmakelang`, fix issues
- cmake: replace the way clang-tidy verifies tests, fix issues found
- cmake: simplify handling generated `lib1521.c` in libtests
- cmake: sync `target_link_libraries()` order in tests more
- cmake: sync tests scripts by using the variable `BUNDLE`
- cmake: sync tests scripts with each other and autotools (more)
- cmake: use `target_link_options()` when available
- config-win32: fix default targets, shorten macro logic
- configure: order LDAP after the SSL libraries
- connect: drop unused struct member
- connection: clarify `transport`
- connection: eliminate member `remote_addr`
- curl-config: fix whitespace in usage text
- curl.h: make CURL_IPRESOLVE_* symbols defined as longs
- curl.h: make CURLSSLOPT_* symbols defined as longs
- curl.h: remove the "RESERVED" error codes
- curl: implement non-blocking STDIN read on Windows
- curl: improve non-blocking STDIN performance
- curl: remove the global argument from many functions
- curl: unify pointer names to global config
- curl_get_line: make sure lines end with newline
- curl_memory.h: fix to undefine `accept4`
- curl_path: make SFTP handle a path like /~ properly.
- curlinfo: provide the 'digest' feature
- CURLSHOPT_SHARE.md: mention multi-threading requires callbacks
- DE

_[Truncated at 4000 characters — full notes: https://curl.se/ch/8.15.0.html]_