DEBIAN-CVE-2026-76816
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-76816
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-76816.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-76816
- Upstream
- Published
- 2026-08-24T20:17:19Z
- Modified
- 2026-09-10T08:47:28Z
- Severity
-
- 3.5 (Low) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.137.Final and 4.2.17.Final, MqttEncoder does not validate client identifiers, will topics, usernames, and PUBLISH topic names before encoding, allowing prohibited null bytes in MQTT UTF-8 string fields and potentially causing routing, access-control, or identity mismatches in downstream brokers. The vulnerability is exploitable when an application uses Netty's MQTT encoder to construct messages from user-controlled input. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.
- References
Affected packages
Debian:12 / netty
Package
- Name
- netty
- Purl
- pkg:deb/debian/netty?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / netty
Package
- Name
- netty
- Purl
- pkg:deb/debian/netty?arch=source&distro=trixie
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:14 / netty
Package
- Name
- netty
- Purl
- pkg:deb/debian/netty?arch=source&distro=forky
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected