MinorCritical vulnerability

CVE-2026-107162 (CVSS 7.6)

NVD · officialPublished Oct 7, 2026Risk 23/100

Express Gateway through 1.16.11 contains an authentication bypass vulnerability in the OAuth 2.0 refresh_token grant that fails to validate the token secret or issuing client. Attackers with any valid client credentials and the identifier portion of another user's refresh token can obtain that user's access token and impersonate them against oauth2-protected APIs.

Technical details

CVSS

7.6

AV:NetworkAC:HighPR:LowUI:None

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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