CVE-2026-25882

UNKNOWN 0.0

Fiber has a Denial of Service Vulnerability via Route Parameter Overflow

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-129
Vendor	gofiber
Product	fiber
Published	Feb 24, 2026
Last Updated	Feb 24, 2026

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Affected Versions

gofiber / fiber

>= 2.0.0, < 2.52.12 >= 3.0.0, < 3.1.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/gofiber/fiber/security/advisories/GHSA-mrq8-rjmw-wpq3 github.com: https://github.com/gofiber/fiber/pull/3962 github.com: https://github.com/gofiber/fiber/blob/main/path.go#L514 github.com: https://github.com/gofiber/fiber/blob/v2/path.go#L516