SB2026072182 - Multiple vulnerabilities in Netty

Description

This security bulletin contains information about 2 vulnerabilities.

1) Improper access control (CVE-ID: CVE-2026-56746)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to a logical operator error in the origin evaluation process. A remote attacker can send a specially crafted request to bypass the short-circuit mechanism.

2) CRLF injection (CVE-ID: CVE-2026-59919)

CWE-ID: CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to inject arbitrary data in server response.

The vulnerability exists due to insufficient validation of attacker-supplied data within AF_UNIX address. A local user can pass specially crafted data to the application containing CR-LF characters and modify application behavior.

Remediation

Install update from vendor's website.

References

• https://github.com/netty/netty/security/advisories/GHSA-6cqp-g7gg-8hr5
• https://github.com/netty/netty/security/advisories/GHSA-wh89-7897-x99h