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Permalink CVE-2026-25891

created 1 month, 3 weeks ago Activity log

Created suggestion 1 month, 3 weeks ago

Fiber has an Arbitrary File Read in Static Middleware on Windows

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.

References

https://github.com/gofiber/fiber/security/advisories/GHSA-m3c2-496v-cw3v x_refsource_CONFIRM
https://github.com/gofiber/fiber/pull/4064 x_refsource_MISC
https://github.com/gofiber/fiber/commit/59133702301c2ab7b776dd123b474cbd995f2c86 x_refsource_MISC

Affected products

fiber

==>= 3.0.0, < 3.1.0

Matching in nixpkgs

pkgs.guile-fibers

Concurrent ML-like concurrency for Guile

nixos-unstable 1.3.1
- nixpkgs-unstable 1.3.1
- nixos-unstable-small 1.3.1
nixos-25.11 1.3.1
- nixos-25.11-small 1.3.1
- nixpkgs-25.11-darwin 1.3.1

pkgs.ocamlPackages.fiber

Structured concurrency library

nixos-unstable 3.7.0
- nixpkgs-unstable 3.7.0
- nixos-unstable-small 3.7.0
nixos-25.11 3.7.0
- nixos-25.11-small 3.7.0
- nixpkgs-25.11-darwin 3.7.0

pkgs.ocamlPackages_latest.fiber

Structured concurrency library

nixos-unstable 3.7.0
- nixpkgs-unstable 3.7.0
- nixos-unstable-small 3.7.0

Package maintainers

@vyp vyp <elisp.vim@gmail.com>