CVE-2026-108720 PUBLISHED

phpIPAM through 1.8.3 contains a missing authorization vulnerability that allows authenticated low-privilege users to view restricted subnets and addresses because customer, location and NAT pages skip Subnets::check_permission. Attackers can open customer objects.php, single-location.php or nat_details.php to read IP addresses, CIDRs, hostnames and MAC addresses from sections they cannot access.

• HaiND from the Post and Telecommunication Institute of Technology finder

• https://hackmd.io/@haind/phpipam-tools-cross-section-address-disclosure
• https://github.com/phpipam/phpipam/blob/e8010751d491e485acefa5787fb0e518eb948771/app/tools/customers/customer/objects/ipaddresses.php#L69-L110
• https://github.com/phpipam/phpipam/blob/e8010751d491e485acefa5787fb0e518eb948771/app/tools/locations/single-location.php#L129-L195
• https://github.com/phpipam/phpipam/blob/e8010751d491e485acefa5787fb0e518eb948771/app/tools/nat/nat_details.php#L16-L45
• https://github.com/phpipam/phpipam
• VulnCheck Advisory: phpIPAM through 1.8.3 Missing Authorization in Customers, Locations and NAT Pages

• Missing Authorization CWE