CVE-2026-3256

Katalog CVE

CVSS 9.8 · Critical EPSS 0,71%

Kerentanan Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) pada ktat http. Skor CVSS 3.1 9.8 (Critical) menurut NVD.

Deskripsi (NVD)

HTTP::Session versions before 0.54 for Perl defaults to using insecurely generated session ids. HTTP::Session defaults to using HTTP::Session::ID::SHA1 to generate session ids using a SHA-1 hash seeded with the built-in rand function, the high resolution 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. The distribution includes HTTP::session::ID::MD5 which contains a similar flaw, but uses the MD5 hash instead.

Rincian

Terbit di NVD

28 Maret 2026

Terakhir diubah

29 Juni 2026

Status NVD

Modified

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-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
CWE-340: Generation of Predictable Numbers or Identifiers

EPSS (30 hari)

0,71% peluang dieksploitasi; lebih tinggi dari 52,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://security.metacpan.org/docs/guides/random-data-for-security.html advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2026/03/28/5 mailing list · advisory pihak ketiga
• https://metacpan.org/release/KTAT/http-session-0.53/source/lib/HTTP/Session/ID/MD5.pm product
• https://metacpan.org/release/KTAT/http-session-0.53/source/lib/HTTP/Session/ID/SHA1.pm product
• https://metacpan.org/release/TOKUHIROM/http-session-0.54/changes