Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gofiber | Fiber | >= 2.0.0, < 2.52.12 |
Related Weaknesses (CWE)
References
- https://github.com/gofiber/fiber/blob/main/path.go#L514Product
- https://github.com/gofiber/fiber/blob/v2/path.go#L516Product
- https://github.com/gofiber/fiber/pull/3962Issue TrackingPatch
- https://github.com/gofiber/fiber/security/advisories/GHSA-mrq8-rjmw-wpq3ExploitVendor Advisory
FAQ
What is CVE-2026-25882?
CVE-2026-25882 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 route...
How severe is CVE-2026-25882?
CVE-2026-25882 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-25882?
Check the references section above for vendor advisories and patch information. Affected products include: Gofiber Fiber.