Spring Authorization Server 1.5.0-1.5.7 Open Redirect via request_uri
CVE-2026-59355 Published on August 27, 2026
Spring Authorization Server: Open Redirect via request_uri parameter
In versions of Spring Authorization Server 1.5.0 through 1.5.7, the authorization endpoint performs insufficient validation of the request_uri parameter. An attacker can craft a request containing an invalid request_uri paired with an unvalidated redirect_uri, which can result in an open redirect to an attacker-controlled site.
Vulnerability Analysis
CVE-2026-59355 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Timeline
Public disclosure and fix released (Spring Authorization Server 1.5.8 / 1.5.7.1).
Weakness Type
What is an Open Redirect Vulnerability?
A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. An http parameter may contain a URL value and could cause the web application to redirect the request to the specified URL. By modifying the URL value to a malicious site, an attacker may successfully launch a phishing scam and steal user credentials. Because the server name in the modified link is identical to the original site, phishing attempts have a more trustworthy appearance.
CVE-2026-59355 has been classified to as an Open Redirect vulnerability or weakness.
Products Associated with CVE-2026-59355
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Affected Versions
VMware Spring Authorization Server:- Version 1.5.0, <= 1.5.7 is affected.
- Version 1.5.8 is unaffected.
- Version 1.5.7.1 is unaffected.