Quick answers
- Is CVE-2026-8293 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-8293 being exploited in the wild.
- How severe is CVE-2026-8293?
- Informational severity, with a CVSS score of 7.5, published 2 June 2026.
- Which products and versions are affected?
- Really Simple Plugins Really Simple Security < 9.5.10.1.
- Is there a fix for CVE-2026-8293?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-8293 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-8293?
- Check whether you run Really Simple Plugins Really Simple Security at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability exists within the REST API implementation of the Really Simple Security plugin (formerly Really Simple SSL). Specifically, the 'do_not_ask_again' and 'skip_onboarding' endpoints under the '/wp-json/really-simple-security/v1/two-fa/v2/' namespace do not properly validate that a second-factor challenge has been completed before issuing an authentication cookie. An attacker who has already obtained a user's primary credentials can capture a 'login_nonce' from the standard login page and replay it against these vulnerable endpoints. This results in a successful WordPress authentication session, effectively bypassing the email-based One-Time Password (OTP) protection. The issue is resolved in version 9.5.10.1.
Affected products
- Really Simple Plugins Really Simple Security (formerly Really Simple SSL) < 9.5.10.1
Timeline
- 2026-05-12: disclosed: Initial public disclosure by researcher
- 2026-06-02: advisory: NVD publication date