SEPTEMBER 17, 2026
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Case File

CVE-2026-81766

MEDIUM · CVSS 6.6 EPSS 0.26% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-30 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The Really Simple Security plugin for WordPress versions prior to 9.8.0 is vulnerable as it allows administrators of subsites within a multisite network to install arbitrary code from user-supplied URLs, bypassing the intended restrictions for network administrators. This could lead to unauthorized access and execution of malicious code within the shared plugin directory. WordPress multisite administrators and users of the affected plugin should prioritize updating to version 9.8.0 or later to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-81766
Severity
MEDIUM
CVSS
6.6
EPSS
0.26%
WordPress

Original NVD Description

The Really Simple Security WordPress plugin before 9.8.0 does not check that the user is allowed to install Really Simple Security WordPress plugin before 9.8.0 before installing one from a user-supplied URL, allowing an administrator of a subsite on a multisite network to install and execute arbitrary code in the network-shared Really Simple Security WordPress plugin before 9.8.0 directory, which WordPress otherwise reserves to the network administrator. Exploitation requires the network administrator to have enabled the Really Simple Security WordPress plugin before 9.8.0 administration menu for subsites, which is not the default.