CVE-2026-59901

EUVD-2026-50440
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the `Bzip2Decoder` handler in Netty's compression codec pipeline is vulnerable to a denial-of-service attack through a malformed bzip2 stream that permanently captures the event-loop thread in an infinite loop. The vulnerability exists in the run-length encoding (RLE) state machine within [`Bzip2BlockDecompressor.read()`]. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Infinite Loop
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 18.08%
Affected Products (NVD)
VendorProductVersion
nettynetty
𝑥
< 4.1.136
nettynetty
4.2.0 ≤
𝑥
< 4.2.16
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
netty
bookworm
vulnerable
bookworm (security)
vulnerable
forky
vulnerable
sid
vulnerable
trixie
vulnerable
trixie (security)
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
netty
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
trusty
needs-triage
xenial
needs-triage
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
netty-tcnative
suse enterprise desktop 15 SP7
2.0.80-150200.3.48.1
fixed
suse enterprise sap 15 SP4
2.0.80-150200.3.48.1
fixed
suse enterprise sap 15 SP5
2.0.80-150200.3.48.1
fixed
suse enterprise sap 15 SP6
2.0.80-150200.3.48.1
fixed
suse enterprise sap 15 SP7
2.0.80-150200.3.48.1
fixed
suse enterprise server 15 SP4
2.0.80-150200.3.48.1
fixed
suse enterprise server 15 SP5
2.0.80-150200.3.48.1
fixed
suse enterprise server 15 SP6
2.0.80-150200.3.48.1
fixed
suse enterprise server 15 SP7
2.0.80-150200.3.48.1
fixed