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CVE-2026-25882

Published: Feb 24, 2026

Modified: Feb 24, 2026

PUBLISHED

Description

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.

Vendor	Product	Versions
gofiber	fiber	affected `>= 2.0.0, < 2.52.12` affected `>= 3.0.0, < 3.1.0`

Weaknesses (CWE)

References

https://github.com/gofiber/fiber/security/advisories/GHSA-mrq8-rjmw-wpq3

x_refsource_CONFIRM

https://github.com/gofiber/fiber/pull/3962

x_refsource_MISC

https://github.com/gofiber/fiber/blob/main/path.go#L514

x_refsource_MISC

https://github.com/gofiber/fiber/blob/v2/path.go#L516

x_refsource_MISC

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