CVE-2021-47977 WordPress Anti-Malware Security Bruteforce Firewall <= 4.20.72 Directory Traversal
Unauthenticated attackers can read arbitrary files via path traversal in the duplicator_download action, exposing sensitive system data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-47977?
CVE-2021-47977 is a high-severity path traversal vulnerability in Gotmls Malware Security and Bruteforce Firewall, published on 16 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
WordPress Plugin Anti-Malware Security and Bruteforce Firewall 4.20.59 contains a directory traversal vulnerability that allows unauthenticated attackers to read arbitrary files by manipulating the file parameter. Attackers can send requests to the duplicator_download action via admin-ajax.php with path traversal sequences to access sensitive system files outside the intended directory.
Weakness: CWE-22
Which versions are affected by CVE-2021-47977?
How do I fix CVE-2021-47977?
No fix has been published for CVE-2021-47977 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-47977 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47977 exists.
Sources
Also known as GHSA-2qf4-8g9v-6r55.