undici vulnerable to TLS certificate validation bypass via dropped connect options in BalancedPool

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-84961 · Microsoft / collected KEV context

EUVD-2026-71494

GHSA-w293-vg96-wgc3

cve-program · CVE-2026-84961

• https://github.com/nodejs/undici/security/advisories/GHSA-w293-vg96-wgc3
• https://cna.openjsf.org/security-advisories.html

euvd · EUVD-2026-71494

• https://github.com/nodejs/undici/security/advisories/GHSA-w293-vg96-wgc3
• https://cna.openjsf.org/security-advisories.html

nvd · CVE-2026-84961

• https://cna.openjsf.org/security-advisories.html
• https://github.com/nodejs/undici/security/advisories/GHSA-w293-vg96-wgc3

osv · GHSA-w293-vg96-wgc3

• https://github.com/nodejs/undici/security/advisories/GHSA-w293-vg96-wgc3
• https://nvd.nist.gov/vuln/detail/CVE-2026-84961
• https://github.com/nodejs/undici/commit/8f5868fbdbc8f1146dfc1bcd1f2d117790141390
• https://github.com/nodejs/undici/commit/f690157d728508652fef14673630c71515123e96
• https://cna.openjsf.org/security-advisories.html
• https://github.com/nodejs/undici
• https://github.com/nodejs/undici/releases/tag/v7.29.1
• https://github.com/nodejs/undici/releases/tag/v8.10.2

• undici's BalancedPool constructor passes its entire options object through an internal deep-clone that serializes and reparses the value as JSON. Because JSON cannot represent functions, any function-valued TLS option, such as a caller-supp… · Advisory content revised · 11 Nov 2026
• undici's BalancedPool constructor passes its entire options object through an internal deep-clone that serializes and reparses the value as JSON. Because JSON cannot represent functions, any function-valued TLS option, such as a caller-supp… · Advisory content revised · 9 Nov 2026
• undici's BalancedPool constructor passes its entire options object through an internal deep-clone that serializes and reparses the value as JSON. Because JSON cannot represent functions, any function-valued TLS option, such as a caller-supp… · Advisory content revised · 7 Nov 2026
• undici's BalancedPool constructor passes its entire options object through an internal deep-clone that serializes and reparses the value as JSON. Because JSON cannot represent functions, any function-valued TLS option, such as a caller-supp… · Advisory content revised · 5 Nov 2026
• undici's BalancedPool constructor passes its entire options object through an internal deep-clone that serializes and reparses the value as JSON. Because JSON cannot represent functions, any function-valued TLS option, such as a caller-supp… · Advisory content revised · 1 Nov 2026