-file-..-2f..-2f..-2f..-2fhome-2f-2a-2f.aws-2fcredentials May 2026

Let’s decode the string step by step.

| Encoded/Obfuscated Part | Decoded Meaning | |------------------------|----------------| | -file- | Likely a parameter name or indicator (e.g., ?file= in a URL) | | .. | Parent directory symbol | | -2F | URL encoding for / (since / = %2F, but here -2F may be a custom or accidental obfuscation) | | ..-2F..-2F..-2F..-2Fhome | Repeated ../ sequences to traverse up directories, then go into /home | | -2A | URL encoding for * (asterisk) — wildcard character | | .aws | Hidden directory .aws in user’s home | | -2Fcredentials | /credentials file |

Rewriting without obfuscation:
It attempts to reach:
../../../../home/*/.aws/credentials -file-..-2F..-2F..-2F..-2Fhome-2F-2A-2F.aws-2Fcredentials

In a typical Linux system, * would be expanded by the shell or application logic to match any username (e.g., ubuntu, ec2-user, admin, user).
So the attacker is trying to read credentials for any user on the system.

ALLOWED_FILES = ['config.yaml', 'data.json']
if requested_file not in ALLOWED_FILES:
    raise SecurityError("Access denied")

The path you've mentioned seems to be URL-encoded and represents something like: /home/*/.aws/credentials. Let’s decode the string step by step

Path traversal (also known as directory traversal) is a vulnerability that allows an attacker to access files and directories stored outside the web root folder. By manipulating variables that reference files with “dot-dot-slash (../)” sequences and its variants, an attacker can access arbitrary files on the server.

Example vulnerable code (PHP):

$file = $_GET['file'];
include('/var/www/html/' . $file);

If no validation is done, requesting:
index.php?file=../../../../home/user/.aws/credentials
will include the credentials file.

In our encoded case, the attacker is trying to bypass naïve filters that might remove ../ by using URL encoding %2F (or in the given string, -2F as a hypothetical custom encoding) to evade detection. ALLOWED_FILES = ['config

../
..%2F
..%252F
.aws/credentials
/etc/passwd
/home/*/

If an attacker successfully accesses and reads or modifies the ~/.aws/credentials file, they could: