CVE-2026-42579

critical

Published 2026-05-13 · Modified 2026-05-14

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

9.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

9.1

Description

Netty has a DNS Codec Input Validation Bypass (Encoder + Decoder)

Predictions

Exploit likelihood

94%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

OS	Version	Status	Fixed in
sles		affected
debian	bookworm	affected
debian	bullseye	affected
debian	forky	affected
debian	sid	affected
debian	trixie	affected

Package impact

Ecosystem	Package	Vulnerable	Fixed
Maven	io.netty:netty-codec-dns	`>=4.2.0.Alpha1,<4.2.13.Final`	`4.2.13.Final`
Maven	io.netty:netty-codec-dns	`<4.1.133.Final`	`4.1.133.Final`
MAVEN	io.netty:netty-codec-dns	`<= 4.1.132.Final`	`4.1.133.Final`
MAVEN	io.netty:netty-codec-dns	`>= 4.2.0.Alpha1, <= 4.2.12.Final`	`4.2.13.Final`

Application impact

Vendor	Product	Versions	Fixed
netty	netty	`{"endExcluding":"4.1.133"}`	`4.1.133`

References

CWEs

CWE-20 CWE-400 CWE-626

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.