Subscriber-level service degradation via autoloaded options
Published Aug 19, 2026 · Updated Aug 19, 2026
Improper access control in Flipper Code WP Maps before 4.9.8 allows remote authenticated users to degrade service via a vulnerable AJAX action. The published CVE record says the action omits both a capability check and nonce validation, while the 4.9.8 WordPress.org changelog says the fix removed the unused check_products_updates AJAX action and hardened AJAX input handling. Exploitation requires a valid Subscriber-level account and is bounded to persistent option-table growth and per-request autoload overhead, which can interrupt service without reported code execution or administrator takeover.
Summary
What happened
Improper access control in Flipper Code WP Maps before 4.9.8 allows remote authenticated users to degrade service via a vulnerable AJAX action. The published CVE record says the action omits both a capability check and nonce validation, while the 4.9.8 WordPress.org changelog says the fix removed the unused check_products_updates AJAX action and hardened AJAX input handling. Exploitation requires a valid Subscriber-level account and is bounded to persistent option-table growth and per-request autoload overhead, which can interrupt service without reported code execution or administrator takeover.
The record
- CVE
- CVE-2026-18466
- Published
- Aug 19, 2026
- Updated
- Aug 19, 2026
- Vendor
- Flipper Code
- Product
- WP Maps
- Classifications
- CWE-284, T1499.003
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 19, 2026CVE publishedPublication date reported by the CVE source.
- Aug 19, 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 <4.9.8
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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