phpIPAM through 1.8.3 Missing Authorization in Customers, Locations and NAT Pages

Advisories

phpIPAM through 1.8.3 Missing Authorization in Customers, Locations and NAT Pages

severity: medium
date: 10/11/2026
Affecting: phpipam <= 1.8.3
CVE: CVE-2026-108720
CWE: CWE-862 Missing Authorization
CVSS: 5.3
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
References: 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
Credit: HaiND from the Post and Telecommunication Institute of Technology
Description: 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.

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