Really Simple Security <= 9.5.10.0 - Two Factor Authentication Bypass

5.3
Improper Authentication
CVE CVE-2026-8293
CVSS 5.3 (Medium)
Publicly Published June 12, 2026
Last Updated August 21, 2026
Researcher John Umoru

Description

The Really Simple Security – Simple and Performant Security (formerly Really Simple SSL) plugin for WordPress is vulnerable to Two Factor Authentication Bypass in all versions up to, and including, 9.5.10.0. This makes it possible for unauthenticated attackers to bypass the second factor of authentication when the first is known.

Learn more about Authentication Bypass vulnerabilities and how to prevent them.

References

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Vulnerability Details for Really Simple Security – Simple and Performant Security (formerly Really Simple SSL)

Software Type Plugin
Software Slug really-simple-ssl (view on wordpress.org)
Patched? Yes
Remediation Update to version 9.5.10.1, or a newer patched version
Affected Version
  • <= 9.5.10.0
Patched Version
  • 9.5.10.1

Recent vulnerabilities in Really Simple Security – Simple and Performant Security (formerly Really Simple SSL)

# Title CVE ID CVSS Researchers Date
1 Really Simple Security (Free) <= 9.8.2 - Unauthenticated Unbounded Option Growth CVE-2026-88798 5.3 Naoki Kawahigashi September 16, 2026
2 Really Simple Security – Simple and Performant Security (formerly Really Simple SSL) <= 9.8.1 - Missing Authorization to 2FA Bypass CVE-2026-82519 4.3 Michael Holmquist September 14, 2026
3 Really Simple Security <= 9.8.0 - Unauthenticated Two-Factor Authentication Bypass CVE-2026-89080 5.3 Charles Vosburgh September 11, 2026
4 Really Simple Security – Simple and Performant Security (formerly Really Simple SSL) <= 9.8.0 - Unauthenticated Denial of Service CVE-2026-84775 7.5 Ananda Dhakal September 2, 2026
5 Really Simple Security – Simple and Performant Security (formerly Really Simple SSL) <= 9.8.0 - Unauthenticated Two-Factor Authentication Bypass CVE-2026-84777 5.3 Ananda Dhakal September 2, 2026
6 Really Simple Security – Simple and Performant Security (formerly Really Simple SSL) < 9.8.0 - Authenticated (Custom Role+) Remote Code Execution CVE-2026-81766 8.8 Charles Vosburgh August 31, 2026
7 Really Simple Security – Simple and Performant Security (formerly Really Simple SSL) <= 9.5.9 - Missing Authorization CVE-2026-48969 4.3 Evan NR June 3, 2026
8 Really Simple Security – Simple and Performant Security (formerly Really Simple SSL) <= 9.5.10 - Missing Authorization CVE-2026-48970 5.3 RyuuKhagetsu June 3, 2026
9 Really Simple Security – Simple and Performant Security (formerly Really Simple SSL) <= 9.5.7 - Missing Authorization CVE-2026-32461 4.3 Or Benit March 15, 2026
10 Really Simple SSL <= 9.1.4 - Cross-Site Request Forgery CVE-2025-24623 4.3 Ananda Dhakal January 24, 2025

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