Auth bypass in Really Simple Security

CVE-2026-8293

The Really Simple Security WordPress plugin before 9.5.10.1 does not enforce the second-factor challenge in two of its two-factor authentication REST endpoints, allowing an attacker who knows a user's password to obtain a WordPress authentication session for that user without completing the email OTP challenge.

Vulnerability class: Broken Authentication

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (31.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-8293: held from 0.002 to 0.004.

EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002

Affected products

  • Really Simple Security — versions 0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-8293?
CVE-2026-8293 is a high-severity vulnerability in Really Simple Security, classified under Improper Authentication. CVSS score: 7.5/10. Published 2026-06-02.
How severe is CVE-2026-8293?
High severity. CVSS v3 base score is 7.5 out of 10.