{"id":"CVE-2026-56850","state":"PUBLISHED","title":"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 ","description":"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**.","publishedAt":"2026-07-30T06:02:50.074Z","updatedAt":"2026-07-30T12:37:10.100Z","severity":{"score":4.1,"label":"Medium","version":"3.0","vector":"CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N","source":"hackerone"},"assigner":"hackerone","products":["nodejs node"],"affected":[{"vendor":"nodejs","product":"node","defaultStatus":"unaffected","versions":[{"version":"26.5.0","status":"affected","lessThanOrEqual":"26.5.0","versionType":"semver"},{"version":"24.18.0","status":"affected","lessThanOrEqual":"24.18.0","versionType":"semver"},{"version":"22.23.1","status":"affected","lessThanOrEqual":"22.23.1","versionType":"semver"}]}],"references":["https://nodejs.org/en/blog/vulnerability/july-2026-security-releases"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/56xxx/CVE-2026-56850.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-56850","state":"PUBLISHED","datePublished":"2026-07-30T06:02:50.074Z","dateUpdated":"2026-07-30T12:37:10.100Z","assignerShortName":"hackerone","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateReserved":"2026-06-23T15:00:03.632Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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**."}],"affected":[{"vendor":"nodejs","product":"node","defaultStatus":"unaffected","versions":[{"version":"26.5.0","status":"affected","lessThanOrEqual":"26.5.0","versionType":"semver"},{"version":"24.18.0","status":"affected","lessThanOrEqual":"24.18.0","versionType":"semver"},{"version":"22.23.1","status":"affected","lessThanOrEqual":"22.23.1","versionType":"semver"}]}],"references":[{"url":"https://nodejs.org/en/blog/vulnerability/july-2026-security-releases"}],"metrics":[{"cvssV3_0":{"version":"3.0","vectorString":"CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N","baseScore":4.1,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","type":"CWE","lang":"en","description":"CWE-287 Improper Authentication - Generic"}]}],"providerMetadata":{"shortName":"hackerone","orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateUpdated":"2026-07-30T06:02:50.074Z"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-30T12:37:02.406813Z","id":"CVE-2026-56850","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-30T12:37:10.100Z"}}]}}}