CVE-2025-40924

Catalyst::Plugin::Session before version 0.44 for Perl generates session ids insecurely

State: Published
Severity: 6.5 Medium
Published: Jul 17, 2025
Updated: Jul 17, 2025
Reserved: Apr 16, 2025

Description

Catalyst::Plugin::Session before version 0.44 for Perl generates session ids insecurely.

The session id is generated from a (usually SHA-1) hash of a simple counter, the epoch time, the built-in rand function, the PID and the current Catalyst context. This information is of low entropy. 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.

Predicable session ids could allow an attacker to gain access to systems.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N	CISA-ADP

Weaknesses

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

Affected Products

Product	Versions
Catalyst::Plugin::SessionHAARG	0.01 to before 0.44Affected

References

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