Unauthenticated file disclosure via traversal in duplicator_download
Published May 16, 2026 · Updated May 16, 2026
Path traversal in GOTMLS Anti-Malware Security and Brute-Force Firewall 4.20.72 and earlier allows remote attackers to read arbitrary files. The duplicator_download action reads the unvalidated file parameter from admin-ajax.php requests, allowing traversal sequences to escape the intended directory. No authentication or user interaction is required; exposed WordPress sites can disclose configuration and other files readable by the PHP process.
Summary
What happened
Path traversal in GOTMLS Anti-Malware Security and Brute-Force Firewall 4.20.72 and earlier allows remote attackers to read arbitrary files. The duplicator_download action reads the unvalidated file parameter from admin-ajax.php requests, allowing traversal sequences to escape the intended directory. No authentication or user interaction is required; exposed WordPress sites can disclose configuration and other files readable by the PHP process.
The record
- CVE
- CVE-2021-47977
- Published
- May 16, 2026
- Updated
- May 16, 2026
- Vendor
- GOTMLS
- Product
- Anti-Malware Security and Brute-Force Firewall
- Classifications
- CWE-22, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 16, 2026CVE publishedPublication date reported by the CVE source.
- May 16, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=4.20.72
What conditions does exploitation require?
What is affected?
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
- WordPress Plugin Anti-Malware Security and Bruteforce Firewall 4.20.59 Directory Traversalfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo