Really Simple Security Pro <= 9.5.4.0 - Authenticated (Subscriber+) Insecure Direct Object Reference

2026-02-23 00:00

dcodx

Strategic Overview

Status

Patched in 9.5.4.1

Affected PluginReally Simple Security Pro

Affected Version<= 9.5.4.0

CVSS4.3Medium

CVECVE-2026-27397

View all Really Simple Security Pro vulnerabilities

Vulnerability Overview

The Really Simple Security Pro plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 9.5.4.0 due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to perform an unauthorized action.

Technical Analysis

REMEDIATION: Update to version 9.5.4.1, or a newer patched version --- IDENTIFIER: CWE-639 (Authorization Bypass Through User-Controlled Key) The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

External References

https://www.cve.org/CVERecord?id=CVE-2026-27397 https://www.wordfence.com/threat-intel/vulnerabilities/id/04b341ae-f856-4bdb-b9d0-696c25131bd0

CVSS Vector

4.3

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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