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CVE

CVE-2026-42579

CVE-2026-42579 netty
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CVE

CVE-2026-42579

CVE-2026-42579 netty

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's DNS codec does not enforce RFC 1035 domain name constraints during either encoding or decoding. This creates a bidirectional attack surface: malicious DNS responses can exploit the decoder, and user-influenced hostnames can exploit the encoder. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
C
H
U
-
C
H
U
-

Related Resources

No items found.

References

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-42579

Severity

9.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
9.1
EPSS Probability
0.00043%
EPSS Percentile
0.131%
Introduced Version
0
Fix Available
0.27.1-r1,2.17.0-r13,2.9.0-r6,4.2.1-r2,4.0.9-r16,3.2.1-r5,8.8.24-r1,9.4.1-r0,37.0.0-r3,9.1.10-r5,9.2.8-r3,9.3.4-r1,9.1.10-r12,9.2.8-r1,12.6.0-r0,2.7.0-r15,15.0.22-r7,15.1.7-r15,15.2.6-r15,16.0.11-r2,16.1.3-r2,0.33.1-r16,0.33.1-r11,26.6.1-r2,26.6.1-r4,1.21.3-r2,1.22.0-r2,1.21.3-r4,2.19.4-r14,1.5.0-r4,1.5.0-r3,3.1.0-r2,0.9.0-r0,4.3.1.1-r8,481-r0,39.0.1-r8,3.6.1-r6

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