CVE-2026-34786

Katalog CVE

CVSS 5.3 · Medium EPSS 0,33%

Kerentanan Incorrect Behavior Order: Validate Before Canonicalize pada rack. Skor CVSS 3.1 5.3 (Medium) menurut github.com.

Deskripsi (NVD)

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Static#applicable_rules evaluates several header_rules types against the raw URL-encoded PATH_INFO, while the underlying file-serving path is decoded before the file is served. As a result, a request for a URL-encoded variant of a static path can serve the same file without the headers that header_rules were intended to apply. In deployments that rely on Rack::Static to attach security-relevant response headers to static content, this can allow an attacker to bypass those headers by requesting an encoded form of the path. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.

Rincian

Terbit di NVD

2 April 2026

Terakhir diubah

24 Juli 2026

Status NVD

Analyzed

CVSS 3.1

5.3 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-180: Incorrect Behavior Order: Validate Before Canonicalize

EPSS (30 hari)

0,33% peluang dieksploitasi; lebih tinggi dari 23,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/rack/rack/security/advisories/GHSA-q4qf-9j86-f5mh advisory vendor