Really Simple Security – Simple and Performant Security (formerly Really Simple SSL) <= 9.5.10 - Missing Authorization
Strategic Overview
- Status
- Patched in 9.5.10.1
- Affected Version
<= 9.5.10- CVSS
- 5.3Medium
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2026-48970
At a glance
CVE-2026-48970 is a medium-severity Missing Authorization vulnerability in the Really Simple Security WordPress plugin, affecting versions <= 9.5.10. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 9.5.10.1; sites on affected versions should update now. Disclosed June 2026, reported by RyuuKhagetsu.
Vulnerability Overview
The Really Simple Security – Simple and Performant Security (formerly Really Simple SSL) plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in all versions up to, and including, 9.5.10. This makes it possible for unauthenticated attackers to perform an unauthorized action.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.
CWE-862: Missing Authorization
Reaching this weakness in Really Simple Security <= 9.5.10 takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.
Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Really Simple Security the fix is 9.5.10.1: builds <= 9.5.10 are affected, anything from 9.5.10.1 onward is not.
Remediation
Update to version 9.5.10.1, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Really Simple Security 9.5.10.1 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Really Simple Security – Simple and Performant Security (formerly Really Simple SSL)
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C