Integer Overflow or Wraparound Affecting netty package, versions *
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Integer Overflow or Wraparound vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-DEBIANUNSTABLE-NETTY-16748383
- published18 May 2026
- disclosed13 May 2026
Introduced: 13 May 2026
NewCVE-2026-42580 (opens in a new tab)How to fix?
There is no fixed version for Debian:unstable netty.
NVD Description
Note: Versions mentioned in the description apply only to the upstream netty package and not the netty package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's chunk size parser silently overflows int, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.