Quick answers
- Is CVE-2026-93562 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-93562 being exploited in the wild.
- How severe is CVE-2026-93562?
- Medium severity, with a CVSS score of 6.5, published 18 September 2026.
- Which products and versions are affected?
- Netty <UNKNOWN>.
- Is there a fix for CVE-2026-93562?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-93562 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-93562?
- Check whether you run Netty at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an HTTP request smuggling flaw in Netty's HTTP/1 decoder caused by incomplete validation of Transfer-Encoding headers. A remote attacker can send specially crafted HTTP requests over the network to exploit this, requiring no authentication or user interaction. Successful exploitation allows injection of arbitrary HTTP requests that may bypass security controls or access restricted resources.
Affected products
- Netty Netty <UNKNOWN>
Timeline
- 2026-09-18: disclosed