Vulnerability · Published Mar 19, 2026 · Assigned by Patchstack
CVE-2026-27397WordPress Really Simple Security Pro plugin <= 9.5.4.0 - Insecure Direct Object References (IDOR) vulnerability
Medium 6.5
In plain English
A medium-severity authorization bypass via user-controlled key in Really Simple Security Pro from Really Simple Plugins B.V.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.2%top 86.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Really Simple Plugins B.V. | Really Simple Security Pro | n/a – through 9.5.4.0 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L