CVE-2026-59354

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Source
https://cve.org/CVERecord?id=CVE-2026-59354
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59354.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-59354
Published
2026-08-27T06:33:03Z
Modified
2026-09-03T03:48:19Z
Severity
  • 9.6 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N CVSS Calculator
Summary
Spring Security OAuth2 Authorization Server: Insufficient validation of Dynamic Client Registration metadata
Details

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).

Database specific 
{
    "cna_assigner": "vmware",
    "cwe_ids": [
        "CWE-20"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59354.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "7.0.0"
                },
                {
                    "last_affected": "7.0.4"
                }
            ],
            "source": "AFFECTED_FIELD"
        },
        {
            "extracted_events": [
                {
                    "introduced": "7.0.0"
                },
                {
                    "fixed": "7.0.4"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}
References

Affected packages

Git / github.com/spring-projects/spring-security

Affected ranges

Type
GIT
Repo
https://github.com/spring-projects/spring-security
Events
Introduced
1d99a7fb14c62354cac00412cce2071892cdf465
Fixed
53bc6a77963209bb2a5f3efdd855b1f4a8051cc3
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "7.0.0"
        },
        {
            "fixed": "7.0.5"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

7.*
7.0.0
7.0.1
7.0.2
7.0.3
7.0.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59354.json"