VMware by Broadcom Spring Security up to 7.0.4 Dynamic Client Registration input validation

Summaryinfo

A vulnerability has been found in VMware by Broadcom Spring Security up to 7.0.4 and classified as critical. This impacts an unknown function of the component Dynamic Client Registration. The manipulation leads to input validation. This vulnerability is traded as CVE-2026-59354. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in VMware by Broadcom Spring Security up to 7.0.4. This issue affects an unknown part of the component Dynamic Client Registration. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In versions of Spring Security's OAuth2 Authorization Server module 7.0.0 through 7.0.4, when Dynamic Client Registration is explicitly enabled, the registration endpoint performs insufficient validation of certain client metadata fields supplied by the registering client. An attacker who possesses a valid Initial Access Token can register a malicious client with crafted metadata, which, depending on server configuration and how the metadata is later rendered or used, may result in Stored Cross-Site Scripting (XSS), Privilege Escalation, or Server-Side Request Forgery (SSRF).

It is possible to read the advisory at spring.io. The identification of this vulnerability is CVE-2026-59354 since 07/04/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/27/2026).

Upgrading to version 7.0.5 eliminates this vulnerability.

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Productinfo

Vendor

• VMware by Broadcom

Name

• Spring Security

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4

License

• commercial

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CPE 2.2info

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