CVE-2022-41915: Debian Linux

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Netty project is an event-driven asynchronous network application framework. Starting in version 4.1.83.Final and prior to 4.1.86.Final, when calling `DefaultHttpHeadesr.set` with an _iterator_ of values, header value validation was not performed, allowing malicious header values in the iterator to perform HTTP Response Splitting. This issue has been patched in version 4.1.86.Final. Integrators can work around the issue by changing the `DefaultHttpHeaders.set(CharSequence, Iterator<?>)` call, into a `remove()` call, and call `add()` in a loop over the iterator of values.

Affected products

• Debian Debian Linux: version 10.0 only; version 11.0 only
• Netty Netty: from 4.1.83, before 4.1.86 (fixed in 4.1.86)

Published 2022-12-13. Last modified 2026-06-17.