CVE-2026-27397 PUBLISHED

WordPress Really Simple Security Pro plugin <= 9.5.4.0 - Insecure Direct Object References (IDOR) vulnerability

Assigner: Patchstack
Reserved: 19.02.2026 Published: 19.03.2026 Updated: 19.03.2026

Authorization Bypass Through User-Controlled Key vulnerability in Really Simple Plugins B.V. Really Simple Security Pro allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Really Simple Security Pro: from n/a through 9.5.4.0.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
CVSS Score: 6.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	Low
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	Really Simple Plugins B.V.
Product	Really Simple Security Pro
Versions	Default: unaffected affected from n/a to 9.5.4.0 (incl.)

Solutions

Update the WordPress Really Simple Security Pro plugin to the latest available version (at least 9.5.4.1).

Credits

dcodx | Patchstack Bug Bounty Program finder

References

https://patchstack.com/database/wordpress/plugin/really-simple-ssl-pro/vulnerability/wordpress-really-simple-security-pro-plugin-9-5-3-1-insecure-direct-object-references-idor-vulnerability?_s_id=cve

Problem Types

CWE-639 Authorization Bypass Through User-Controlled Key CWE

Impacts

CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels