Import and export users and customers <= 2.0.8 - Authenticated (Subscriber+) Privilege Escalation via Multisite Capability Meta Fields
The Import and export users and customers plugin for WordPress is vulnerable to Privilege Escalation in all versions up to and including 2.0.8 via the save_extra_user_profile_fields() function. This is due to an incomplete blocklist that correctly restricts capability meta keys for the primary site (e.g., wp_capabilities, wp_user_level) but fails to block the equivalent meta keys for any other subsite in a WordPress Multisite network (e.g., wp_2_capabilities, wp_2_user_level), allowing these keys to pass the in_array() check and be written directly to user meta via update_user_meta(). This makes it possible for authenticated attackers, with Subscriber-level access and above, to escalate their privileges to Administrator on any subsite within the Multisite network by submitting a crafted profile update to /wp-admin/profile.php. Exploitation requires that an administrator has previously imported a CSV file containing multisite-prefixed capability column headers and has enabled the 'Show fields in profile?' option, which causes those keys to be stored in the acui_columns option and exposed as editable fields on the user profile page.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Import and export users and customers | <= 2.0.8 | 2.0.9 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-269- Platform
- WordPress
- Package
Import and export users and customers- Disclosed
- 01.05.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 368cff00-6a86-443e-aec4-4115a229a3c1 - Wordfence Intelligence
Copyright 1999-2026 The MITRE Corporation
Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Import and export users and customers
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 32
- First → latest
- 12.2018 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 12
- Medium 20
Disclosures per year
- 2018: 1
- 2019: 5
- 2020: 2
- 2021: 0
- 2022: 2
- 2023: 2
- 2024: 8
- 2025: 1
- 2026: 11
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Import and export users and customers <= 2.0.8 - Authenticated (Subscriber+) Privilege Escalation via Multisite Capability Meta Fields this entry
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