SB2026092129 - Improper handling of highly compressed data in Apache MINA

Description

This security bulletin contains information about 1 vulnerability.

1) Improper handling of highly compressed data (CVE-ID: CVE-2026-47321)

CWE-ID: CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper handling of highly compressed data in the CompressionFilter class when inflating incoming compressed data with ZLib.inflate. A remote attacker can send specially crafted compressed data that expands to consume excessive application memory to cause a denial of service.

Remediation

Install update from vendor's website.

References

• https://lists.apache.org/api/email.lua?id=91w80fb24mgorlc939o4h264h7srhgj9
• https://lists.apache.org/thread/y7xj1bl8qo47p9bktb11hg5v6k1d4dyj