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EMFILE when uploading more files than <code>ulimit -n</code>

cmdline tool

Status: Open.

#20740 In curl/curl;

· teobouvard opened on Feb 26, 2026

CMake Error using lib/cmake/CURL/CURLConfig.cmake when statically linked with nghttp2, libssh2

cmake

Status: Open.

#20729 In curl/curl;

· val-ms opened on Feb 26, 2026

--follow doesn't respect 303 method change unless --data also present

Status: Open.

#20715 In curl/curl;

· thedanbob opened on Feb 24, 2026

Broken auto retry

cmdline tool

Status: Open.

#20669 In curl/curl;

· BlackFuffey opened on Feb 22, 2026

Using --insecure and --ech hard together breaks

TLS

Status: Open.

#20655 In curl/curl;

· Fullmetal5 opened on Feb 20, 2026

Add header type information to the headers callback

feature-request

HTTP

libcurl API

Status: Open.

#20610 In curl/curl;

· mkauf opened on Feb 17, 2026

ossl_get_channel_binding fails with ML-DSA certificates with "Could not find digest algorithm UNDEF (NID 0)"

TLS

Status: Open.

#20590 In curl/curl;

· rcritten opened on Feb 13, 2026

pinnedpubkey does not support root cert

feature-request

TLS

Status: Open.

#20538 In curl/curl;

· vvb2060 opened on Feb 7, 2026

CURLOPT_OPENSOCKETFUNCTION ignored for some socket opens

libcurl API

Status: Open.

#20471 In curl/curl;

· rakshasa opened on Jan 29, 2026

curl hangs with internal error removing splay node

needs-info

Status: Open.

#20411 In curl/curl;

· Malinskiy opened on Jan 23, 2026

Current API insufficient to deal with idle connection close/errors on kqueue

connecting & proxies

Status: Open.

#20377 In curl/curl;

· rakshasa opened on Jan 20, 2026

Requests start failing after long running connections on 8.17 release

connecting & proxies

Status: Open.

#20105 In curl/curl;

· plv1313 opened on Dec 28, 2025