This is a security release.

Notable Changes

• (CVE-2026-21637) wrap SNICallback invocation in try/catch (Matteo Collina) - High
• (CVE-2026-21710) use null prototype for headersDistinct/trailersDistinct (Matteo Collina) - High
• (CVE-2026-21711) include permission check to pipe_wrap.cc (RafaelGSS) - Medium
• (CVE-2026-21712) handle url crash on different url formats (RafaelGSS) - Medium
• (CVE-2026-21713) use timing-safe comparison in Web Cryptography HMAC and KMAC (Filip Skokan) - Medium
• (CVE-2026-21714) handle NGHTTP2_ERR_FLOW_CONTROL error code (RafaelGSS) - Medium
• (CVE-2026-21717) test array index hash collision (Joyee Cheung) - Medium
• (CVE-2026-21715) add permission check to realpath.native (RafaelGSS) - Low
• (CVE-2026-21716) include permission check on lib/fs/promises (RafaelGSS) - Low

Commits

• [2086b7477b] - (CVE-2026-21717) build,test: test array index hash collision (Joyee Cheung) nodejs-private/node-private#834
• [0f9332a40a] - (CVE-2026-21713) crypto: use timing-safe comparison in Web Cryptography HMAC and KMAC (Filip Skokan) nodejs-private/node-private#822
• [2b6937ddb2] - deps: update undici to 7.24.4 (Node.js GitHub Bot) #62271
• [bfb8ad5787] - deps: update undici to 7.24.3 (Node.js GitHub Bot) #62233
• [be6384727f] - deps: upgrade npm to 11.11.1 (npm team) #62216
• [2feea5bb97] - deps: V8: override depot_tools version (Richard Lau) #62344
• [86c04784dd] - (CVE-2026-21710) http: use null prototype for headersDistinct/trailersDistinct (Matteo Collina) nodejs-private/node-private#821
• [5197a56a34] - (CVE-2026-21711) permission: include permission check to pipe_wrap.cc (RafaelGSS) nodejs-private/node-private#820
• [04a886c735] - (CVE-2026-21716) permission: include permission check on lib/fs/promises (RafaelGSS) nodejs-private/node-private#795
• [9a7f80f2b0] - (CVE-2026-21715) permission: add permission check to realpath.native (RafaelGSS) nodejs-private/node-private#794
• [d9c9b628cf] - (CVE-2026-21714) src: handle NGHTTP2_ERR_FLOW_CONTROL error code (RafaelGSS) nodejs-private/node-private#832
• [45b55dc786] - (CVE-2026-21712) src: handle url crash on different url formats (RafaelGSS) nodejs-private/node-private#816
• [4bfda307c0] - (CVE-2026-21637) tls: wrap SNICallback invocation in try/catch (Matteo Collina) nodejs-private/node-private#819