SB2026083154 - Input validation error in Spring Authorization Server
Published: August 31, 2026
Security Bulletin ID
SB2026083154
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-2026-59355)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to redirect users to an arbitrary website.
The vulnerability exists due to improper input validation in the authorization endpoint when processing a crafted authorization request containing an invalid request_uri and an arbitrary redirect_uri. A remote attacker can send a specially crafted authorization request to redirect users to an arbitrary website.
User interaction is required.
Remediation
Install update from vendor's website.