Express Gateway through 1.16.11 OAuth 2.0 Refresh Token Validation Bypass (ExpressGateway express-gateway)

CVE-2026-107162

HIGH 7.6

En bref

Source: NVD
EPSS: EPSS 0.36 % · centile 30 (2026-10-30)
État: PUBLISHED
Publiée: 2026-10-07 12:48 UTC
Mise à jour: 2026-10-10 02:22 UTC
Attribuée par: VulnCheck
Statut NVD: Awaiting Analysis

Rechercher sur…

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.

Faiblesses (CWE)

CWE-287 — Authentification incorrecte

Références

Scores

Version	Score	Vecteur	Évalué par
CVSS 4.0	HIGH 7.6	CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	VulnCheck
CVSS 3.1	MEDIUM 6.8	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N	VulnCheck
CVSS 4.0	HIGH 7.6	CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD · disclosure@vulncheck.com (Secondary)
CVSS 3.1	MEDIUM 6.8	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N	NVD · disclosure@vulncheck.com (Secondary)

Références européennes

ENISA EUVD · EUVD-2026-94316
GCVE · GCVE-0-2026-107162

Produits affectés

Produit	Versions
ExpressGateway · express-gateway	affected 0 ≤ 1.16.11

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD

⚠️ Express Gateway through 1.16.11 OAuth 2.0 Refresh Token Validation Bypass (ExpressGateway express-gateway)