Unauthenticated post modification via user-controlled object key
Published Jul 9, 2026 · Updated Jul 9, 2026
Authorization bypass in weDevs WP User Frontend 4.3.7 and earlier allows remote attackers to modify arbitrary WordPress posts. The wpuf_submit_post AJAX path uses a user-controlled wpuf_files_data key to select a post and overwrites its title, content, and excerpt without verifying ownership or edit capability. Access to any WPUF post submission form supplies the nonce, so no WordPress role is required to alter posts owned by other users, including administrators.
Summary
What happened
Authorization bypass in weDevs WP User Frontend 4.3.7 and earlier allows remote attackers to modify arbitrary WordPress posts. The wpuf_submit_post AJAX path uses a user-controlled wpuf_files_data key to select a post and overwrites its title, content, and excerpt without verifying ownership or edit capability. Access to any WPUF post submission form supplies the nonce, so no WordPress role is required to alter posts owned by other users, including administrators.
The record
- CVE
- CVE-2026-12418
- Published
- Jul 9, 2026
- Updated
- Jul 9, 2026
- Vendor
- HappyMonster
- Product
- WP User Frontend
- Classifications
- CWE-639, T1565.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 9, 2026CVE publishedPublication date reported by the CVE source.
- Jul 9, 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 <=4.3.7
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.
Weakness, pattern, technique
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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