EUVD-2026-20063
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Lifecycle Timeline
3Description
Ado::Sessions versions through 0.935 for Perl generates insecure session ids. The session id is generated from 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. Predicable session ids could allow an attacker to gain access to systems. Note that Ado is no longer maintained, and has been removed from the CPAN index. It is still available on BackPAN.
Analysis
Ado::Sessions through version 0.935 for Perl generates cryptographically weak session identifiers by seeding SHA-1 with the built-in rand function, system time, and process ID, allowing attackers to predict valid session IDs and hijack user sessions. The vulnerability affects unmaintained code no longer available on CPAN, though it remains on BackPAN. …
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