Incorrect Comparison in ip-address - #VU150200
Published: September 16, 2026
Vulnerability identifier: #VU150200
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-697
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass IP address allowlist restrictions.
The vulnerability exists due to incorrect comparison in the isInSubnet() and isHostInSubnet() functions when comparing IPv4 and IPv6 addresses. A remote attacker can provide an address from a different address family with matching leading bits to bypass IP address allowlist restrictions.
Exploitation requires an application to parse untrusted input as either address family and compare it against a fixed-family allowlist.
Affected software
ip-address
Remediation
Install security update from vendor's website.
ip-address - update to 10.7.1