CVE-2018-1256 json
Issuer validation regression in Spring Cloud SSO Connector
published 2018-05-07 8 y ago modified 2026-06-17 4 mo ago also GHSA-q4q2-93pw-qwgf , EUVD-2022-4881
- cvss
- 8.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 75%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- maven io.pivotal.spring.cloud:spring-cloud-sso-connector 2.1.3.RELEASE
Exploit prediction
1.58% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | io.pivotal.spring.cloud:spring-cloud-sso-connector | >=2.1.2.RELEASE, <2.1.3.RELEASE |
2.1.3.RELEASE |
Affected products
- Pivotal Spring Cloud SSO Connector
Classification
- Technology feeds
References
-
github.com
/pivotal-cf/spring-cloud-sso-connector/commit/ef647a2acf2363c6018e8543d665ac8862593372
web
-
pivotal.io
/security/cve-2018-1256
web, mitigation, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-1256
advisory
Sources
- CVE List CVE-2018-1256
- GitHub Advisory GHSA-q4q2-93pw-qwgf
- NVD CVE-2018-1256
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.