# 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.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **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 available:** No
- **Published:** 27 Aug 2026
- **Updated:** 27 Aug 2026
- **Also known as:** GHSA-mhfq-9687-g8m3

## 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 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2026-59355?

It affects 1 product.


Products: 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

- [CVE-2026-22752](https://insights.sbomify.com/CVE-2026-22752/): Auth bypass in Spring Authorization Server (critical 9.6)
- [CVE-2026-59316](https://insights.sbomify.com/CVE-2026-59316/): Spring Authorization Server Default Consent Page is vulnerable to Cross-Site Scripting (XSS) (high 8.2)
- [CVE-2026-41008](https://insights.sbomify.com/CVE-2026-41008/): Spring Security Authorization Server Open Redirect via request_uri (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-59355 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-59355 in the wild and no public exploit code.

Affected product: VMware Spring Authorization Server. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-59355/ (Markdown: https://insights.sbomify.com/CVE-2026-59355/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-59355
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-59355
- OSV: https://osv.dev/vulnerability/CVE-2026-59355

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-59355/
Summaries are generated and may contain mistakes; the official description above is the record.