CVE-2026-22752: Spring Security Authorization Server Dynamic Client Registration endpoints perform insufficient validation of client metadata
Authentication bypass by primary weakness vulnerability in Spring Security Spring Authorization Server.
This issue affects Spring Authorization Server: from 7.0.0 through 7.0.4, from 1.5.0 through 1.5.6, from 1.4.0 through 1.4.9, from 1.3.0 through 1.3.10.
Security readout for executives and security teams
Plain-English summary
CVE-2026-22752 is a critical authentication-bypass issue in Spring Authorization Server. The reported problem is insufficient validation of client metadata at Dynamic Client Registration endpoints. If an affected authorization server exposes those endpoints, attackers with low privileges may be able to bypass intended authentication controls and affect confidentiality and integrity.
Executive priority
Treat this as urgent for any identity platform using affected Spring Authorization Server versions. Authentication-bypass risk in an authorization server can undermine downstream applications, so ownership, inventory, and vendor-guided remediation should be prioritized immediately.
Technical view
The CVE maps to CWE-287 and affects Spring Authorization Server 7.0.0-7.0.4, 1.5.0-1.5.6, 1.4.0-1.4.9, and 1.3.0-1.3.10. CVSS 3.1 is 9.6: network exploitable, low complexity, low privileges, no user interaction, scope changed, high confidentiality and integrity impact.
Likely exposure
Exposure is likely limited to organizations running the affected Spring Authorization Server versions, especially where Dynamic Client Registration endpoints are enabled or reachable. The source bundle does not prove every Spring Security deployment is affected.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. The CVSS vector indicates exploitation would be remote, low complexity, and require low privileges, but no exploit details or public weaponization evidence are included in the bundle.
Researcher notes
Evidence is sufficient for affected version ranges, weakness class, and severity. It is incomplete for fixed versions, exploit availability, and exact vulnerable metadata fields. Avoid assuming impact beyond Spring Authorization Server Dynamic Client Registration endpoints.
Mitigation direction
Inventory Spring Authorization Server versions across all authorization services.
Review Spring's CVE advisory for fixed versions or vendor-supported mitigations.
Prioritize upgrading affected 7.0.x, 1.5.x, 1.4.x, and 1.3.x deployments.
Restrict exposure of Dynamic Client Registration endpoints according to vendor guidance.
Monitor registration-related activity until remediation is complete.
Validation and detection
Confirm whether applications use Spring Authorization Server, not only Spring Security.
Check deployed versions against the affected ranges in the CVE record.
Identify whether Dynamic Client Registration endpoints are enabled and reachable.
Review logs for unusual client registration or metadata update activity.
Re-test after vendor-guided remediation to confirm affected versions are removed.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
cwe · medium confidence lookup
CWE-287: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
1CVSS vectors
3Timeline events
1ADP providers
2Source links
SSVC decision data
CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total
CVSS vector scores
1 official score
We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-287 · source CWE mapping
Improper Authentication
Improper Authentication represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.