Configuration in Spring Security - CVE-2026-22748
Published: April 27, 2026
Vulnerability identifier: #VU128225
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-22748
CWE-ID: CWE-16
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: VMware, Inc
Affected software:
Spring Security
Spring Security
Detailed vulnerability description
The vulnerability allows a remote user to modify application integrity checks.
The vulnerability exists due to improper security configuration in NimbusJwtDecoder#withIssuerLocation and NimbusReactiveJwtDecoder#withIssuerLocation when configuring JWT decoding without a separate OAuth2TokenValidator<Jwt>. A remote user can present a JWT with an unexpected issuer to modify application integrity checks.
The issue arises because issuer validation may be assumed to be enabled automatically when using withIssuerLocation.
How to mitigate CVE-2026-22748
Install security update from vendor's website.