CVE-2018-11047 — cloudfoundry-identity-ser…
HIGHCVE-2018-11047 is a high-severity (CVSS 7.5) CWE-863 vulnerability in org.cloudfoundry.identity:cloudfoundry-identity-server. A fix is available for org.cloudfoundry.identity:cloudfoundry-identity-server — see the affected versions and patch details below.
Cloud Foundry UAA accepts refresh token as access token on admin endpoints
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2018-11047 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,166 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
org.cloudfoundry.identity:cloudfoundry-identity-server☕org.cloudfoundry.identity:cloudfoundry-identity-server☕org.cloudfoundry.identity:cloudfoundry-identity-server☕org.cloudfoundry.identity:cloudfoundry-identity-server☕org.cloudfoundry.identity:cloudfoundry-identity-serverReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Cloud Foundry UAA, versions 4.19 prior to 4.19.2 and 4.12 prior to 4.12.4 and 4.10 prior to 4.10.2 and 4.7 prior to 4.7.6 and 4.5 prior to 4.5.7, incorrectly authorizes requests to admin endpoints by accepting a valid refresh token in lieu of an access token. Refresh tokens by design have a longer expiration time than access tokens, allowing the possessor of a refresh token to authenticate longer than expected. This affects the administrative endpoints of the UAA. i.e. /Users, /Groups, etc. However, if the user has been deleted or had groups removed, or the client was deleted, the refresh token will no longer be valid.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.cloudfoundry.identity:cloudfoundry-identity-server | all versions | 4.5.7org.cloudfoundry.identity:cloudfoundry-identity-server:4.5.7 |
| ☕Maven | org.cloudfoundry.identity:cloudfoundry-identity-server | ≥ 4.6.0&&< 4.7.6 | 4.7.6org.cloudfoundry.identity:cloudfoundry-identity-server:4.7.6 |
| ☕Maven | org.cloudfoundry.identity:cloudfoundry-identity-server | ≥ 4.8.0&&< 4.10.2 | 4.10.2org.cloudfoundry.identity:cloudfoundry-identity-server:4.10.2 |
| ☕Maven | org.cloudfoundry.identity:cloudfoundry-identity-server | ≥ 4.11.0&&< 4.12.4 | 4.12.4org.cloudfoundry.identity:cloudfoundry-identity-server:4.12.4 |
| ☕Maven | org.cloudfoundry.identity:cloudfoundry-identity-server | ≥ 4.13.0&&< 4.19.2 | 4.19.2org.cloudfoundry.identity:cloudfoundry-identity-server:4.19.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.cloudfoundry.identity:cloudfoundry-identity-server, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.cloudfoundry.identity:cloudfoundry-identity-server to 4.5.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-11047 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2018-11047 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2018-11047. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2018-11047 in your dependencies?
O3 Security finds CVE-2018-11047 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.