Testing for blind SSRF with Burp Suite - Port Swigger
Summary: PortSwigger describes blind server-side request forgery as a vulnerability where an attacker induces an application to send HTTP requests to a specified URL but receives no response. Its documented detection method uses Collaborator to inject a domain into a request and monitor the Collaborator server for out-of-band interactions, which confirm the application is vulnerable to SSRF.
Why it matters: Blind SSRF returns nothing to the attacker, so the only evidence of exploitation is an out-of-band interaction - meaning a request your application makes to an attacker-chosen domain can go unnoticed without monitoring built for it.
Read the original at PortSwigger Research ↗
- Topics
- Vulnerabilities & Patching
- Related
- Attackers Exploit UnrealIRCd Flaw That Enables Server-Level Command Injection Cyber Risks · Nov 14, 2026U.S. CISA adds Check Point and UnrealIRCd flaws to its Known Exploited Vulnerabilities catalog Cyber Risks · Nov 14, 2026PostgreSQL Patches 52 Flaws, Including 22-Year-Old Bug Enabling Authenticated RCE Cyber Risks · Nov 13, 2026