Home/CVE/Vulnerability in Spring Spring Security. When an application configures JWT decoding with NimbusJwtDecoder  or Nimbus
CVE

CVE-2026-22748

Vulnerability in Spring Spring Security. When an application configures JWT decoding with NimbusJwtDecoder  or Nimbus

Vulnerability in Spring Security. When an application configures JWT decoding with NimbusJwtDecoder or NimbusReactiveJwtDecoder, it must configure an OAuth2TokenValidator<Jwt> separately, for example by calling setJwtValidator.This issue affects Spring Security: from 6.3.0 through 6.3.14, from 6.4.0 through 6.4.14, from 6.5.0 through 6.5.9, from 7.0.0 through 7.0.4.

MEDIUM · CVSS 5.3 EPSS 0.00075
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

4
vmware spring security< 6.3.15
vmware spring security>= 6.4.0 and < 6.4.15
vmware spring security>= 6.5.0 and < 6.5.10
vmware spring security>= 7.0.0 and < 7.0.5
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.springframework.security:spring-security-oauth2-jose MODERATE
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · security@vmware.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 Apr 2026 · 06:16 AM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://spring.io/security/cve-2026-22748Vendor Advisory
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