CVE-2026-3256

HTTP::Session versions through 0.53 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.
CVSS

No CVSS.

Configurations

No configuration.

History

No history.

Information

Published : 2026-03-28 19:16

Updated : 2026-03-30 13:26


NVD link : CVE-2026-3256

Mitre link : CVE-2026-3256

CVE.ORG link : CVE-2026-3256


JSON object : View

Products Affected

No product.

CWE
CWE-338

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

CWE-340

Generation of Predictable Numbers or Identifiers