{"id":"CVE-2026-84003","title":"Authentication bypass by capture-replay in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to perform spoofing over a network.","summary":"Authentication bypass by capture-replay in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to perform spoofing over a network.","severity":"high","cvss":7.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-294"],"vendor":"microsoft","product":"azure/msal-node","affected":["azure/msal-node < 5.6.0"],"patched":["azure/msal-node 5.6.0"],"published":"2026-09-08","updated":"2026-09-16","sourceUpdated":"2026-09-16T14:06:28.077","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84003","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-84003","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"epss":0.00425,"epssPercentile":0.36283,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-11T20:49:07.570578Z"},"ingestedAt":"2026-09-08T19:08:49.634Z","slug":"CVE-2026-84003","body":"## Overview\n\nAuthentication bypass by capture-replay in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to perform spoofing over a network.\n\n## Affected\n\n- `azure/msal-node < 5.6.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `azure/msal-node 5.6.0`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":40.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}