Exposure of Resource to Wrong Sphere Affecting io.vertx:vertx-core package, versions [4.5.12, 4.5.16)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published24 Jun 2025
- disclosed23 Jun 2025
- creditMarkus Dlugi
Introduced: 23 Jun 2025
CVE-2025-49574 (opens in a new tab)How to fix?
Upgrade io.vertx:vertx-core to version 4.5.16 or higher.
Overview
io.vertx:vertx-core is a tool-kit for building reactive applications on the JVM.
Affected versions of this package are vulnerable to Exposure of Resource to Wrong Sphere via the duplicated context process. An attacker can access sensitive data from another transaction by triggering the duplication of an already duplicated context.
Note:
Duplicating a duplicated context is rather rare and is only done in a few places:
- Quarkus REST Client when using OTel (but it's the same transaction, so no leak)
- Quarkus Messaging connectors
- Quarkus SmallRye Health (same transaction, so no leak)
Workaround
When duplicating a duplicated context, the following code can be done to avoid the potential leak:
((ContextInternal) VertxContext.getRootContext(ctx)).duplicate()