CVE-2025-40926

Katalog CVE

CVSS 9.8 · Critical EPSS 0,45%

Kerentanan Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) pada kazeburo plack. Skor CVSS 3.1 9.8 (Critical) menurut CISA ADP.

Deskripsi (NVD)

Plack::Middleware::Session::Simple versions before 0.05 for Perl generates session ids insecurely. The default session id generator returns a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage. Predictable session ids could allow an attacker to gain access to systems. Plack::Middleware::Session::Simple is intended to be compatible with Plack::Middleware::Session, which had a similar security issue CVE-2025-40923.

Rincian

Terbit di NVD

5 Maret 2026

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

9.8 (Critical), sumber CISA ADP
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-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
CWE-340: Generation of Predictable Numbers or Identifiers

EPSS (30 hari)

0,45% peluang dieksploitasi; lebih tinggi dari 37,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/kazeburo/Plack-Middleware-Session-Simple/commit/760bb358b8f53e52cf415888a4ac858fd99bb24e.pa... patch
• https://github.com/kazeburo/Plack-Middleware-Session-Simple/pull/4 issue tracking · patch
• https://security.metacpan.org/docs/guides/random-data-for-security.html advisory pihak ketiga
• https://www.cve.org/CVERecord?id=CVE-2025-40923 advisory pihak ketiga
• https://metacpan.org/release/KAZEBURO/Plack-Middleware-Session-Simple-0.04/source/lib/Plack/Middleware/Session... issue tracking · product
• https://metacpan.org/release/KAZEBURO/Plack-Middleware-Session-Simple-0.05/changes