CVE-2026-9561: kura from 5.0.0 (inclusive), before 5.6.2 (exclusive); +1 more affected products

Affected technology

kura · from 5.0.0 (inclusive), before 5.6.2 (exclusive)
eclipse

Eclipse Kura · 5.0.0 through 5.6.1
Eclipse Foundation

Description’s affected range: versions prior to 5.6.2 trust the client-supplied X-Forwarded-For HTTP header as the authoritative source of the client IP address in audit log entries

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

An unauthenticated remote attacker can exploit this vulnerability to bypass IP-based brute-force protections — such as fail2ban — by spoofing the logged IP address to a non-routable value, allowing a brute-force attack to proceed undetected, or to cause a denial of service against a third party by injecting a victim's IP address and triggering a ban on that address. Vendor/CNA’s CVSS 4.0 assessment (base score 8.8/10) rates confidentiality impact as none; integrity impact as high; availability impact as low.