Fiber vulnerable to XSS in AutoFormat Content Negotiation

Summary Description A Cross-Site Scripting CWE-79 vulnerability in Go Fiber allows a remote attacker to inject arbitrary HTML/JavaScript by supplying Accept: text/html on any request whose handler passes attacker-influenced data to the AutoFormat feature. This affects github.com/gofiber/fiber/v3...

PT-2026-37270

Name of the Vulnerable Software and Affected Versions Fiber versions prior to 2.52.12 Fiber versions prior to 3.1.0 Description A Cross-Site Scripting issue exists in the Go Fiber web framework. A remote attacker can inject arbitrary HTML or JavaScript by providing an Accept: text/html header in ...