SB20260427183 - Improper input validation in Spring Authorization Server

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Main Vulnerability Database SB20260427183

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

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Input validation error (CVE-ID: CVE-2026-22752)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


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.

References