SB20260427183 - Improper input validation in Spring Authorization Server
Published: April 27, 2026
Security Bulletin ID
SB20260427183
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2026-22752)
The vulnerability allows a remote user to conduct cross-site scripting, escalate privileges, or trigger server-side request forgery.
The vulnerability exists due to improper input validation in dynamic client registration endpoints when processing crafted client metadata fields. A remote user can register a malicious client with crafted metadata to conduct cross-site scripting, escalate privileges, or trigger server-side request forgery.
Only deployments with dynamic client registration explicitly enabled are vulnerable.
Remediation
Install update from vendor's website.