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VULNERABILITY DISCLOSURE STANDARD

Security.txt Generator – RFC 9116 Vulnerability Disclosure Builder

Generate standardized, RFC 9116 compliant security.txt files for deployment at /.well-known/security.txt. Provide ethical security researchers and bug bounty hunters with secure disclosure channels, OpenPGP keys, and policy guidelines.

RFC 9116 Standard Compliant
CISA Binding Directive Aligned
100% In-Browser Generation
Zero Data Retention
ℹ️ Scope & Limitation Notice: Generates the text configuration file; requires deploying the resulting security.txt file to your web server /.well-known/ path.
Launch Tool How It Works & Guide
RFC 9116 security.txt Lifecycle
Well-Known File
1 Security Contact URI
mailto: or https:// disclosure form
2 Encryption Key URI
OpenPGP key for encrypted reports
3 Canonical & Expires
RFC 9116 mandatory metadata
4 Deploy to Origin
/.well-known/security.txt
Mode: Standardized Plaintext Format Sample Preview

RFC 9116 Directives Configuration

Target Path

/.well-known/security.txt
RFC 9116 Valid 

				


				

					

					
				

			


		


		
	






		
		

			


				
				

					

						FUNCTIONAL ARCHITECTURE
					

					

						What Does the Security.txt & Vulnerability Disclosure Generator (RFC 9116) Do?					

					

													
The Security.txt Generator creates standardized plaintext vulnerability disclosure files conforming to RFC 9116. When deployed at your domain /.well-known/security.txt URL, it provides security researchers with legitimate contact methods to report vulnerabilities responsibly.

													
Mandated by CISA Binding Operational Directive (BOD) 20-01 for federal agencies and recommended across enterprise cybersecurity frameworks, security.txt standardizes contacts, OpenPGP keys, policy links, and bug bounty programs.

											

				


				
				

					

						STEP-BY-STEP METHODOLOGY
					

					

						How the Security.txt & Vulnerability Disclosure Generator (RFC 9116) Works					

					

													

								

									1								

								
Define Contact Information

								
Enter security contact URIs (such as mailto:[email protected] or a vulnerability reporting form).

							

													

								

									2								

								
Add Cryptographic Keys & Policies

								
Link to your public OpenPGP key for encrypted communications and specify your vulnerability disclosure policy.

							

													

								

									3								

								
Set Mandatory Expiration

								
Specify an expiration timestamp (RFC 9116 requires an Expires field not exceeding one year in the future).

							

													

								

									4								

								
Copy and Deploy

								
Download or copy the generated plaintext content and host it at https://example.com/.well-known/security.txt.

							

											

					

						GEO Methodology Declaration: 
						This tool performs client-side plaintext document synthesis adhering strictly to the IETF RFC 9116 specification and CISA BOD 20-01 directives.					

				


				
								

					

						DECISION MATRIX
					

					

						How to Interpret Security.txt & Vulnerability Disclosure Generator (RFC 9116) Results					

					

						

							
								

									Result / Status
									Technical Meaning
									Recommended Action
								

							
							
																	

										
											
												Compliant (RFC 9116)											
										
										Contact URI present, valid future Expires timestamp included, and hosted at /.well-known/security.txt.
										Maintain configuration; ensure expiration date is renewed annually before expiration.
									

																	

										
											
												Missing Expires Directive											
										
										File contains contact info but omits the mandatory Expires field; non-compliant with RFC 9116.
										Add "Expires: YYYY-MM-DDTHH:MM:SSZ" with a timestamp up to one year in the future.
									

																	

										
											
												Expired Timestamp											
										
										The timestamp in the Expires field has passed; security tools and researchers will flag the file as stale.
										Update the Expires directive with an updated future timestamp and redeploy.
									

																	

										
											
												Missing File (404 Not Found)											
										
										No security.txt file deployed on the domain; researchers have no clear disclosure channel.
										Generate and deploy a security.txt file to establish a coordinated disclosure process.
									

															
						

					

				

				
				
								

					

						TECHNICAL FOUNDATION
					

					

						The Anatomy of RFC 9116 Directives and CISA BOD 20-01					

					

													
Published in April 2022 by the IETF, RFC 9116 established security.txt as a Proposed Standard. The file must be served as text/plain with UTF-8 encoding. The two mandatory directives are Contact (URI) and Expires (RFC 3339 timestamp). Optional directives include Encryption (OpenPGP key), Canonical (exact URL), Policy (guidelines), Hiring (careers), and Acknowledgments (hall of fame).

													
CISA Binding Operational Directive 20-01 requires all US federal executive branch agencies to publish a Vulnerability Disclosure Policy (VDP) and maintain a security.txt file. This ensures external white-hat researchers who identify security flaws can notify defensive teams directly without fear of legal reprisal.

											

				

				
				
								

					

						OPERATIONAL PRACTICES
					

					

						Real-World Use Cases for Security.txt & Vulnerability Disclosure Generator (RFC 9116)					

					

													

								
									Security Operations Teams								
								
Establish Bug Reporting Channels

								
Creating direct, encrypted intake pathways for external vulnerability disclosures.

							

													

								
									DevOps & SREs								
								
Automate Server Deployment

								
Adding security.txt to web server static build assets and Nginx configurations.

							

													

								
									Compliance Officers								
								
Satisfy CISA & ISO 27001 Requirements

								
Providing evidence of formal vulnerability disclosure pathways for regulatory audits.

							

													

								
									Bug Bounty Managers								
								
Direct Researchers to Bounty Programs

								
Guiding external researchers to HackerOne, Bugcrowd, or self-hosted bounty programs.

							

											

				

				
				
								

					

						TRANSPARENT BOUNDARIES
					

					

						Limitations of the Security.txt & Vulnerability Disclosure Generator (RFC 9116)					

					

						Maintaining an accurate threat model requires understanding what external point-in-time tools can and cannot evaluate:					

					
    
													
  • 
								⚠️
								Generating the file does not automatically publish it; you must manually place the file on your web server.
							
    • 
													
  • 
								⚠️
								The file must be served over HTTPS; serving security.txt over unencrypted HTTP violates RFC 9116.
							
    • 
													
  • 
								⚠️
								Under RFC 9116, the file must be accessible at /.well-known/security.txt (legacy /security.txt may be redirected).
							
    • 
											

				

				
				
								

					

						

							

								Related Cybersecurity & Diagnostic Tools							

							

								Complementary security utilities, audit calculators, and posture generators.							

						

						
					

					

													
								

									AppSec Policy Generator
									→
								

								
Create the formal vulnerability disclosure policy linked from your security.txt file.

							
													
								

									Security Headers Checker
									→
								

								
Audit your server headers to ensure /.well-known/ endpoints are protected.

							
													
								

									HTTPS Redirect Checker
									→
								

								
Verify that requests to security.txt automatically upgrade to HTTPS.

							
													
								

									Website Security Checklist
									→
								

								
Verify comprehensive defensive hardening across your domain perimeter.

							
											

				

				
				
								

					

						

							EXPERT FAQS
						

						

							Frequently Asked Questions: Security.txt & Vulnerability Disclosure Generator (RFC 9116)						

					

					

													

								
									Where should the security.txt file be hosted?
									+
								
								

									RFC 9116 specifies that security.txt must be located in the /.well-known/ directory: https://example.com/.well-known/security.txt. A redirect from /security.txt is also permissible.								

							

													

								
									Why is an Expires directive mandatory in RFC 9116?
									+
								
								

									The Expires directive prevents stale contact information from remaining on abandoned servers indefinitely. When a file expires, automated tools alert operators that contact info must be re-verified.								

							

													

								
									Can I include multiple Contact directives?
									+
								
								

									Yes. You can include multiple Contact directives (such as both a mailto: email address and an https:// web reporting form URL).								

							

													

								
									Should the security.txt file be digitally signed?
									+
								
								

									RFC 9116 strongly recommends signing the file using OpenPGP (clearsign signature) so researchers can verify that the disclosure instructions have not been tampered with.								

							

													

								
									Does security.txt expose my website to more attacks?
									+
								
								

									No. Attackers already probe web servers regardless. A security.txt file provides legitimate researchers and white-hat hackers with a legal, responsible pathway to report discoveries.								

							

											

				

				
				
								

					

						PRIMARY REFERENCES
					

					

						Authoritative Standards & Technical References					

					

						This tool operates in direct accordance with verified cybersecurity standards and technical specifications established by authoritative primary institutions:					

					

													

								

									IETF / RFC Editor
									
								

								

									
										RFC 9116: A File Format to Aid in Security Vulnerability Disclosure									
								

								
The definitive engineering standard defining the security.txt format, syntax, and deployment rules.

							

													

								

									CISA
									
								

								

									
										CISA Binding Operational Directive 20-01									
								

								
Federal operational directive mandating vulnerability disclosure policies and security.txt files.

							

											

				

				
				
								

					

						Cybersecurity Navigation & Assessment Hub					

					

						Connect into related diagnostic engines, calculators, compliance generators, and foundational cybersecurity architectures across SafeNetworkHub:					

					

													
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