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    CVE-2026-25882

    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.

    Published:Feb 24, 2026
    Last Modified:Apr 18, 2026
    EPS:Feb 24, 2026
    EPSS Score:0.00079
    CVSS Score:7.5

    Affected Products

    Vendor
    Gofiber
    Product
    Fiber

    Exploits

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

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-100 Overflow Buffers

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High