azuread/microsoft-authentication-library-for-js · Security
MSAL Node authorization code flow may disclose parameters to an attacker-controlled endpoint
- GHSA ID
- GHSA-xcx6-jx8p-x3h5
- CVE ID
- CVE-2026-109461
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS v3
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Description
Impact
Origin 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.
Patches
Version 7.1.0 and higher are patched.
Workarounds
Ensure you pass in only the auth_code to to acquireTokenByCode
CWEs
- CWE-346 · Origin Validation Error
References
- https://github.com/AzureAD/microsoft-authentication-library-for-js/security/advisories/GHSA-xcx6-jx8p-x3h5 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2026-109461 ↗
- https://github.com/AzureAD/microsoft-authentication-library-for-js/pull/8901 ↗
- https://github.com/AzureAD/microsoft-authentication-library-for-js/commit/f550958586475dbfeb1cd44be14a2d653728850e ↗
- https://github.com/AzureAD/microsoft-authentication-library-for-js/releases/tag/msal-node-v7.1.0 ↗
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109461 ↗
- https://github.com/advisories/GHSA-xcx6-jx8p-x3h5 ↗