Installing Burp's CA certificate in Firefox - Port Swigger
Summary: PortSwigger's documentation walks through installing Burp's unique CA certificate in Firefox: with Burp running, the user visits http://burpsuite, clicks CA Certificate to download it, then imports it under Preferences > Privacy and Security > View certificates > Authorities and enables the setting that lets the certificate identify websites. The steps apply only to manual testing in an external browser, since Burp's own preconfigured browser needs no certificate install, and users who previously installed a different Burp-generated CA certificate are told to remove it first.
What's compelling: The procedure ends by having the user trust a certificate that can identify websites and then browse HTTPS without warnings - the same trust setting an attacker would want on a workstation, which is why the guide also covers deleting and distrusting the PortSwigger CA when testing is done.
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