Subscriber data disclosure via unprotected export action
Published Oct 22, 2025 · Updated Oct 22, 2025
Missing authorization in NS Maintenance Mode for WP through 1.3.1 allows remote attackers to download subscriber names and email addresses. The public ns_mm_create_csv_subscriber AJAX action returns CSV data without checking authentication or authorization. The plugin must be active and subscriber records must exist; exploitation discloses stored names and email addresses without changing site data.
Summary
What happened
Missing authorization in NS Maintenance Mode for WP through 1.3.1 allows remote attackers to download subscriber names and email addresses. The public ns_mm_create_csv_subscriber AJAX action returns CSV data without checking authentication or authorization. The plugin must be active and subscriber records must exist; exploitation discloses stored names and email addresses without changing site data.
The record
- CVE
- CVE-2025-10638
- Published
- Oct 22, 2025
- Updated
- Oct 22, 2025
- Vendor
- NsThemes
- Product
- NS Maintenance Mode for WP
- Classifications
- CWE-862, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 22, 2025CVE publishedPublication date reported by the CVE source.
- Oct 22, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=1.3.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- WPScan unauthenticated subscriber export proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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