GHSA-6cw8-7j6c-hccp — vertx-core
Fix: eclipse/vert.x@1bb6445GHSA-6cw8-7j6c-hccp is a CWE-93 vulnerability in io.vertx:vertx-core. A fix is available for io.vertx:vertx-core — see the affected versions and patch details below.
Moderate severity vulnerability that affects io.vertx:vertx-core
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.
Real-World Exposure
io.vertx:vertx-coreReal-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
In Eclipse Vert.x version 3.0 to 3.5.1, the HttpServer response headers and HttpClient request headers do not filter carriage return and line feed characters from the header value. This allow unfiltered values to inject a new header in the client request or server response.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | io.vertx:vertx-core | ≥ 3.0.0&&< 3.5.2 | 3.5.2io.vertx:vertx-core:3.5.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for io.vertx:vertx-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update io.vertx:vertx-core to 3.5.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6cw8-7j6c-hccp 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 GHSA-6cw8-7j6c-hccp can be triaged on real exposure rather than presence alone.
Tailored to GHSA-6cw8-7j6c-hccp. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
While the affected artifact is being shipped in Fuse 6.3 via camel-vertx component, the vulnerable code is not being used, therefore Fuse 6.3 is not affected.
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat Fuse 7.2 | vertx | RHSA-2018:3768 |
| Text-Only RHOAR | vertx | RHSA-2018:2371 |
Frequently Asked Questions
Is GHSA-6cw8-7j6c-hccp in your dependencies?
O3 Security finds GHSA-6cw8-7j6c-hccp across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.