{"id":"CVE-2026-109461","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-109461","summary":"MSAL Node authorization code flow may disclose parameters to an attacker-controlled endpoint","details":"### Impact\n\nOrigin validation error in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to disclose information over a network. This affects the auth_code flow.\n\n### Patches\n\nVersion 7.1.0 and higher are patched.\n\n### Workarounds\n\nEnsure you pass in only the auth_code to to acquireTokenByCode","published":"2026-10-23T22:16:44Z","modified":"2026-10-23T22:30:05.010413241Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"@azure/msal-node","fixedVersion":"7.1.0"}],"fix":{"url":"https://github.com/AzureAD/microsoft-authentication-library-for-js/pull/8901","label":"AzureAD/microsoft-authentication-library-for-js#8901"},"references":[{"type":"WEB","url":"https://github.com/AzureAD/microsoft-authentication-library-for-js/security/advisories/GHSA-xcx6-jx8p-x3h5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109461"},{"type":"WEB","url":"https://github.com/AzureAD/microsoft-authentication-library-for-js/pull/8901"},{"type":"WEB","url":"https://github.com/AzureAD/microsoft-authentication-library-for-js/commit/f550958586475dbfeb1cd44be14a2d653728850e"},{"type":"PACKAGE","url":"https://github.com/AzureAD/microsoft-authentication-library-for-js"},{"type":"WEB","url":"https://github.com/AzureAD/microsoft-authentication-library-for-js/releases/tag/msal-node-v7.1.0"},{"type":"WEB","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109461"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-23T22:30:05.010413241Z"}}