Bug 2442484 (CVE-2026-25882)

Summary: CVE-2026-25882 github.com/gofiber/fiber/v2: Fiber: Denial of Service via excessive route parameters
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in Fiber, an Express-inspired web framework for Go. This denial of service (DoS) vulnerability allows a remote attacker to crash the application. By sending requests to routes containing more than 30 parameters, the attacker can exploit missing validation during route registration and an unbounded array write during request matching, leading to application instability and unavailability.
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Bug Depends On: 2442494, 2442495, 2442492, 2442493    
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Description OSIDB Bzimport 2026-02-24 22:02:06 UTC 
Fiber is an Express inspired web framework written in Go. A denial of service vulnerability exists in Fiber v2 and v3 that allows remote attackers to crash the application by sending requests to routes with more than 30 parameters. The vulnerability results from missing validation during route registration combined with an unbounded array write during request matching. Version 2.52.12 patches the issue in the v2 branch and 3.1.0 patches the issue in the v3 branch.