Improper access control in Simple OAuth (OAuth2) & OpenID Connect - CVE-2026-114542
Published: October 23, 2026
Vulnerability identifier: #VU157405
CSH Severity: Low
CVSS v4: 2.3 [CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-114542
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper token permission caching across identical scopes. A remote user can bypass implemented security restrictions and gain elevated privileges on the target system.
Affected software
Simple OAuth (OAuth2) & OpenID Connect
How to mitigate CVE-2026-114542
Install updates from vendor's website.
Simple OAuth (OAuth2) & OpenID Connect - update to 6.1.3