Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-59354

CVE-2026-59354HIGH

VMware by Broadcom Spring Security (OAuth2 Authorization Server module) — Spring Security OAuth2 Authorization Server: Insufficient validation of Dynamic Client Registration metadata

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  U  H  H  H    8.8   .0049   40.0     —

AFFECTED
  Product                                               Versions  Fixed
  Spring Security (OAuth2 Authorization Server module)  7.0.0 –   7.0.5

TIMELINE
  Jul 4   Reserved by vmware
  Aug 27  Published (CNA: vmware)
  Sep 1   RESCORED — CVE-2026-59354 (VMware by Broadcom Spring Security (OAuth2 Authorization Server module)). CVSS 9.6 → 8.8 (NVD).

CWE-20 · CNA: vmware · CVSS v3.1 · 2 references · NVD status: Analyzed

Description

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).

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 4, 2026	Reserved	Reserved by vmware
August 27, 2026	Published	Published (CNA: vmware)
September 1, 2026	RESCORED	RESCORED — CVE-2026-59354 (VMware by Broadcom Spring Security (OAuth2 Authorization Server module)). CVSS 9.6 → 8.8 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
VMware by Broadcom	Spring Security (OAuth2 Authorization Server module)	Maven	7.0.0	7.0.5

Weaknesses

CWE-20

References (2)

https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N&version=3.1 [US Government Resource, Third Party Advisory]
https://spring.io/security/cve-2026-59354 [Vendor Advisory]

Authoritative record: CVE-2026-59354 at cve.org

Vendors: vmware

Weaknesses: CWE-20

Ecosystems: Maven

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-59354 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.