Subscriber token disclosure via nonce-only AJAX handlers
Published May 12, 2026 · Updated May 12, 2026
Missing authorization in MonsterInsights 10.1.2 and earlier allows remote authenticated users to disclose Google OAuth tokens and reset Ads integration. The monsterinsights_ads_get_token and monsterinsights_ads_reset_experience AJAX handlers validate a nonce but omit a capability check. Subscriber access suffices because the plugin exposes the admin nonce on low-privilege wp-admin pages, enabling token theft and integration disruption.
Summary
What happened
Missing authorization in MonsterInsights 10.1.2 and earlier allows remote authenticated users to disclose Google OAuth tokens and reset Ads integration. The monsterinsights_ads_get_token and monsterinsights_ads_reset_experience AJAX handlers validate a nonce but omit a capability check. Subscriber access suffices because the plugin exposes the admin nonce on low-privilege wp-admin pages, enabling token theft and integration disruption.
The record
- CVE
- CVE-2026-5371
- Published
- May 12, 2026
- Updated
- May 12, 2026
- Vendor
- Monster Insights LLC
- Product
- MonsterInsights
- Classifications
- CWE-862, T1528
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 12, 2026CVE publishedPublication date reported by the CVE source.
- May 12, 2026Record 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 <=10.1.2
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
- Atomic Edge CVE-2026-5371 proof-of-concept scriptproof of concept · unverified
- CleanTalk CVE-2026-5371 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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