Security Bulletin: IBM DevOps Deploy / IBM UrbanCode Deploy (UCD) is susceptible to a Request/Response Smuggling vuln in Netty (CVE-2026-59898)

Summary Netty is used by IBM DevOps Deploy / IBM UrbanCode Deploy UCD as part of the server-agent communication systems. CVE-2026-59898. Vulnerability Details CVEID:CVE-2026-59898 DESCRIPTION: Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final an...

CVE-2026-59898

creationtimestamp| type| source ---|---|--- 2026-08-10 13:20:13+00:00| seen| https://bsky.app/profile/o2cloud.bsky.social/post/3msq6vheark2o 2026-08-13 08:45:08+00:00| seen| https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0991 2026-09-20 05:20:11+00:00| seen|...

UBUNTU-CVE-2026-59898

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 or V08 handshaker by sending Sec-WebSocket-Version: 7 and omitting Connection: Upgrade / Upgrade: websocket headers,...

CVE-2026-59898 Netty: WebSockets V07/V08 handshaker missing Connection/Upgrade validation

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 or V08 handshaker by sending Sec-WebSocket-Version: 7 and omitting Connection: Upgrade / Upgrade: websocket headers,...

Linux Distros Unpatched Vulnerability : CVE-2026-59898

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade...

SUSE CVE-2026-59898

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 or V08 handshaker by sending Sec-WebSocket-Version: 7 and omitting Connection: Upgrade / Upgrade: websocket headers,...