{"cve":"CVE-2026-25882","nvd":{"published":"2026-02-24T21:16:29.640","modified":"2026-06-17T10:25:22.483","status":"Analyzed","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_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","score":5.5},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-129"],"references":["https://github.com/gofiber/fiber/blob/main/path.go#L514","https://github.com/gofiber/fiber/blob/v2/path.go#L516","https://github.com/gofiber/fiber/pull/3962","https://github.com/gofiber/fiber/security/advisories/GHSA-mrq8-rjmw-wpq3"],"products":["gofiber:fiber"],"source":"nvd","synced_at":"2026-10-19T22:24:17.937441719+00:00"},"epss":{"cve":"CVE-2026-25882","score":0.00666,"percentile":0.51864,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-mrq8-rjmw-wpq3","url":"https://osv.dev/vulnerability/GHSA-mrq8-rjmw-wpq3","summary":"Fiber has a Denial of Service Vulnerability via Route Parameter Overflow","modified":"2026-09-10T03:50:35.414534014Z","packages":[{"ecosystem":"Go","name":"github.com/gofiber/fiber/v2","purl":"pkg:golang/github.com/gofiber/fiber/v2","ranges":["<2.52.12"],"fixed":["2.52.12"]},{"ecosystem":"Go","name":"github.com/gofiber/fiber/v3","purl":"pkg:golang/github.com/gofiber/fiber/v3","ranges":["<3.1.0"],"fixed":["3.1.0"]}]},{"id":"GO-2026-4543","url":"https://osv.dev/vulnerability/GO-2026-4543","summary":"Fiber has a Denial of Service Vulnerability via Route Parameter Overflow in github.com/gofiber/fiber","modified":"2026-02-26T19:11:05.834423Z","packages":[{"ecosystem":"Go","name":"github.com/gofiber/fiber/v2","purl":"pkg:golang/github.com/gofiber/fiber/v2","ranges":["<2.52.12"],"fixed":["2.52.12"]},{"ecosystem":"Go","name":"github.com/gofiber/fiber/v3","purl":"pkg:golang/github.com/gofiber/fiber/v3","ranges":["<3.1.0"],"fixed":["3.1.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}