HexBrain

curl · Report #3310318

Missing Security Headers

N/Astatus
mediumseverity
32upvotes
22 Aug 2025disclosed

How it was found

Missing Security Headers (Low)

Target: https://curl.se/ OWASP Mapping: A05 Misconfiguration / A02 Crypto Vulnerability ID: sec-headers-0f70ef5bcb

Description

A Missing Security Headers issue was discovered. This may allow an attacker to exploit the application.

Proof of Concept

Using cURL

curl -I -k "https://curl.se/"

Using Python

import requests
print(requests.get("https://curl.se/", verify=False).headers)

Impact

This vulnerability is categorized as Low. It may allow exploitation such as:

  • Missing Security Headers exploitation (e.g., session theft, injection, data exfiltration).

Remediation

Set CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, and HSTS.

Impact

Impact

This vulnerability is categorized as Low. It may allow exploitation such as:

  • Missing Security Headers exploitation (e.g., session theft, injection, data exfiltration).

Remediation

Set CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, and HSTS.

This report was disclosed publicly on HackerOne and belongs to its author and the program. See the original