How severe is CVE-2018-1256?

CVE-2018-1256 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-1256 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1256?

CVE-2018-1256 affects Vmware Spring Cloud Sso Connector. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1256?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-1256 published?

CVE-2018-1256 was published on 2018-05-07 and last updated on 2026-06-17.

CVE-2018-1256

CVE-2018-1256 is a high-severity vulnerability in Vmware Spring Cloud Sso Connector with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Vmware Spring Cloud Sso Connector
Published: 2018-05-07
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2018-1256?: 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.
How severe is CVE-2018-1256?: CVE-2018-1256 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-1256 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1256?: CVE-2018-1256 affects Vmware Spring Cloud Sso Connector. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1256?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-1256 published?: CVE-2018-1256 was published on 2018-05-07 and last updated on 2026-06-17.

References

https://pivotal.io/security/cve-2018-1256

Affected products (1)

cpe:2.3:a:vmware:spring_cloud_sso_connector:2.1.2:*:*:*:*:*:*:*