Issuer validation regression in Spring Cloud SSO Connector
Spring Cloud SSO Connector, version 2.1.2, contains a regression which disables issuer validation in resource servers that are not bound to the SSO service. In PCF deployments with multiple SSO service plans, a remote attacker can authenticate to unbound resource servers which use this version of the SSO Connector with tokens generated from another service plan.
Mitigation
Users of affected versions should apply the following mitigation:
- Releases that have fixed this issue include:</p><ul><li>Spring Cloud SSO Connector: 2.1.3</li></ul>
- Alternatively, you can perform <u>one</u> of the following workarounds:</p><ul><li>Bind your resource server to the SSO service plan via a service instance binding</li><li>Set “sso.connector.cloud.available=true” within your Spring application properties</li></ul>
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | io.pivotal.spring.cloud:spring-cloud-sso-connector | >= 2.1.2.RELEASE, < 2.1.3.RELEASE | 2.1.3.RELEASE |
References
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
-- Platform
- Java / Kotlin (Maven)
- Package
io.pivotal.spring.cloud:spring-cloud-sso-connector- Disclosed
- 13.05.2022
- Updated
- 11.10.2026 12:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-q4q2-93pw-qwgf - CC BY 4.0
Vulnerability history: io.pivotal.spring.cloud:spring-cloud-sso-connector
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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