{"id":"CVE-2026-56850","details":"A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS (mTLS) client identities to be reused across requests configured with different client certificates.\r\n\r\nThis vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.","aliases":["BIT-node-2026-56850","BIT-node-min-2026-56850"],"modified":"2026-08-27T11:46:43.161104046Z","published":"2026-07-30T06:02:50.074Z","related":["CGA-937g-457g-gp42","SUSE-SU-2026:23130-1","SUSE-SU-2026:23131-1","SUSE-SU-2026:23154-1","SUSE-SU-2026:23155-1","SUSE-SU-2026:3520-1","SUSE-SU-2026:3521-1","SUSE-SU-2026:3557-1","openSUSE-SU-2026:11439-1","openSUSE-SU-2026:11440-1","openSUSE-SU-2026:21545-1","openSUSE-SU-2026:21546-1"],"database_specific":{"cna_assigner":"hackerone","cwe_ids":["CWE-287"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56850.json","unresolved_ranges":[{"extracted_events":[{"introduced":"26.5.0"},{"last_affected":"26.5.0"},{"introduced":"24.18.0"},{"last_affected":"24.18.0"},{"introduced":"22.23.1"},{"last_affected":"22.23.1"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56850.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56850"},{"type":"ARTICLE","url":"https://nodejs.org/en/blog/vulnerability/july-2026-security-releases"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nodejs/node","events":[{"introduced":"12fb157f79da8c094a54bc99370994941c28c235"},{"last_affected":"bd96dfbf0361576724b65322046e2ca9f9609cb9"},{"introduced":"c5349f43cd66d2aa02d86414c9ed426f71d3ae48"},{"last_affected":"20da4aeadabc5b0a01e3fcf520f91df8285c68a2"},{"introduced":"1eaf8a9bd9b665c104bc49f1890e962dddc87d8c"},{"last_affected":"bebd1b8d92bf4cc917844d6335ed1ecf9c2a75fb"}],"database_specific":{"extracted_events":[{"introduced":"22.0"},{"last_affected":"22.23.1"},{"introduced":"24.0.0"},{"last_affected":"24.18.0"},{"introduced":"26.0.0"},{"last_affected":"26.5.0"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*"}}],"versions":["v26.5.0","v26.4.0","v24.18.0","v22.23.1","v26.3.1","v24.17.0","v22.23.0","v26.3.0","v24.16.0","v26.2.0","v22.22.3","v26.1.0","v26.0.0","v24.15.0","v24.14.1","v22.22.2","v22.22.1","v24.14.0","v24.13.1","v22.22.0","v24.13.0","v24.12.0","v24.11.1","v22.21.1","v24.11.0","v22.21.0","v24.10.0","v24.9.0","v22.20.0","v24.8.0","v22.19.0","v24.7.0","v24.6.0","v24.5.0","v22.18.0","v22.17.1","v24.4.1","v24.4.0","v22.17.0","v24.3.0","v24.2.0","v24.1.0","v22.16.0","v24.0.2","v22.15.1","v24.0.1","v24.0.0","v22.15.0","v22.14.0","v22.13.1","v22.13.0","v22.12.0","v22.11.0","v22.10.0","v22.9.0","v22.8.0","v22.7.0","v22.6.0","v22.5.1","v22.5.0","v22.4.1","v22.4.0","v22.3.0","v22.2.0","v22.1.0","v22.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56850.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N"}]}