CVE WatchOct 10, 2026

CVE-2026-107162

Express Gateway through 1.16.11 contains an authentication bypass vulnerability in the OAuth 2.0 refresh_token grant that fails to validate

CVSS

6.8

Medium

EPSS

0.3%

p20

KEV

—

Exploit Today

0-100

Published: Oct 7, 2026 · Last modified: Oct 10, 2026 · CWE-287

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-10-082026-10-23

Technical description

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.

Official references

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