CVE-2026-39324

Katalog CVE

CVSS 9.8 · Critical EPSS 0,27%

Kerentanan Improper Authentication pada rack-session. Skor CVSS 3.1 9.8 (Critical) menurut NVD.

Deskripsi (NVD)

Rack::Session is a session management implementation for Rack. From 2.0.0 to before 2.1.2, Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default decoder instead of rejecting the cookie. This allows an unauthenticated attacker to supply a crafted session cookie that is accepted as valid session data without knowledge of any configured secret. Because this mechanism is used to load session state, an attacker can manipulate session contents and potentially gain unauthorized access. This vulnerability is fixed in 2.1.2.

Rincian

Terbit di NVD

7 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

9.8 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-287: Improper Authentication
CWE-345: Insufficient Verification of Data Authenticity
CWE-502: Deserialization of Untrusted Data
CWE-565: Reliance on Cookies without Validation and Integrity Checking

EPSS (30 hari)

0,27% peluang dieksploitasi; lebih tinggi dari 17,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/rack/rack-session/security/advisories/GHSA-33qg-7wpp-89cq mitigasi · advisory vendor