CVE-2026-59355 Spring Authorization Server: Open Redirect via request_uri parameter
Attackers can redirect users to malicious sites via insufficient validation of the request_uri parameter in Spring Authorization Server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-59355?
CVE-2026-59355 is a medium-severity vulnerability in VMware Spring Authorization Server, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-601
Which versions are affected by CVE-2026-59355?
It affects 1 product.
Products include Broadcom Spring Authorization Server.
How do I fix CVE-2026-59355?
No fix has been published for CVE-2026-59355 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-59355 being exploited?
There is no known exploitation of CVE-2026-59355 in the wild and no public exploit code.
Other vulnerabilities in VMware Spring Authorization Server
Sources
Also known as GHSA-mhfq-9687-g8m3.