Contributor-level remote code execution via filename mismatch
Published Aug 15, 2026 · Updated Aug 15, 2026
Remote code execution in WPDeveloper Templately 3.7.1 and earlier allows remote authenticated users to execute PHP via cloud import. The fetch_remote_file function validates an attacker-controlled Content-Disposition filename as a GIF but writes the file under a URL-derived .php destination name. Contributor-level access reaches REST cloud-import routes guarded only by delete_posts, enabling uploaded PHP to run with the WordPress server account.
Summary
What happened
Remote code execution in WPDeveloper Templately 3.7.1 and earlier allows remote authenticated users to execute PHP via cloud import. The fetch_remote_file function validates an attacker-controlled Content-Disposition filename as a GIF but writes the file under a URL-derived .php destination name. Contributor-level access reaches REST cloud-import routes guarded only by delete_posts, enabling uploaded PHP to run with the WordPress server account.
The record
- CVE
- CVE-2026-18438
- Published
- Aug 15, 2026
- Updated
- Aug 15, 2026
- Vendor
- ReviewX Team
- Product
- Templately
- Classifications
- CWE-434, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 15, 2026CVE publishedPublication date reported by the CVE source.
- Aug 15, 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 <=3.7.1
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.
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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