CVE-2026-25891
High · 7.5CVSS
7.5
EPSS
0.8%
Published
Feb 24, 2026
CISA due date
—
The record
Fiber is an Express inspired web framework written in Go. A Path Traversal (CWE-22) vulnerability in Fiber allows a remote attacker to bypass the static middleware sanitizer and read arbitrary files on the server file system on Windows. This affects Fiber v3 through version 3.0.0. This has been patched in Fiber v3 version 3.1.0.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | github.com/gofiber/fiber/v3 | 0 | 3.1.0 |
| openSUSE:Leap 15.6 | govulncheck-vulndb | 0 | 0.0.20260226T182644-150000.1.149.1 |
Related vulnerabilities
- GO-2026-4540 Fiber has an Arbitrary File Read in Static Middleware on Windows in… Same vulnerability
- GO-2026-4534 Fiber is Vulnerable to Denial of Service via Flash Cookie Unbounded Allocation in… Also affects github.com/gofiber/fiber/v3
- GO-2026-4543 Fiber has a Denial of Service Vulnerability via Route Parameter Overflow in… Also affects github.com/gofiber/fiber/v3
- CVE-2026-25899 Fiber is an Express inspired web framework written in Go. Also affects github.com/gofiber/fiber/v3
- CVE-2026-25882 Fiber is an Express inspired web framework written in Go. Also affects github.com/gofiber/fiber/v3
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