Auth bypass in Phpipam
CVE-2026-75105
phpIPAM through 1.8.1 fails to verify that a requested IP address belongs to the subnet a temporary share token was issued for. In app/temp_share/index.php and app/temp_share/address.php, when the share type is 'subnets', the subnetId parameter is used directly as a database primary key to fetch an address without confirming the address belongs to the authorized subnet. An unauthenticated party holding any valid, non-expired temporary share URL can enumerate the subnetId parameter to read every IP address record across all sections and subnets, including hostnames, DNS names, MAC addresses, owner/contact fields, and notes (which may contain credentials and configuration details).
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Phpipam — versions 0
Weakness classification (CWE)
References
- github.com/phpipam/phpipam/issues/4623 (issue-tracking)
- github.com/phpipam/phpipam (product)
- github.com/phpipam/phpipam/commit/2980be03652c0eb1db9fe2bcefaa210c854b9aea (patch)
- github.com/phpipam/phpipam/releases/tag/v1.8.2 (release-notes)
- www.vulncheck.com/advisories/phpipam-temporary-subnet-share-information-disclos… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-75105?
- CVE-2026-75105 is a high-severity vulnerability in Phpipam, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2026-08-17.
- How severe is CVE-2026-75105?
- High severity. CVSS v3 base score is 7.5 out of 10.