Vulnerability · Published Oct 14, 2026 · Assigned by WPScan

CVE-2026-107508Ultimate Multisite < 2.17.2 - Unauthenticated LFI via 'attributes' Parameter

High 8.6

In plain English

A high-severity path traversal in Ultimate Multisite from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 3.1)8.6High

Exploit odds (30 days)0.5%top 56.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Ultimate Multisite WordPress plugin before 2.17.2 does not validate a user-supplied value used to select a file to include, allowing unauthenticated attackers to include and read arbitrary local files, including the WordPress configuration file.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Ultimate Multisite	0 – before 2.17.2

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

References

https://wpscan.com/vulnerability/2b2808d3-b3fc-41d4-8be5-82d222911bc6/ exploit, vdb-entry, technical-description