CVE-2026-5083CWE-338CWE-340

Ado::Sessions versions through 0.935 for Perl generates insecure session ids

Medium · published April 8, 2026

CVSS v3.1
5.3
EPSS
1%
Percentile
43.1
In the wild
Unconfirmed
What it is

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Note that Ado is no longer maintained, and has been removed from the CPAN index.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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00521 · 43.1th percentile
Weaknesses
CWE-338 · Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG); CWE-340 · Generation of Predictable Numbers or Identifiers
Published
2026-04-08T05:53Z
EPSS history
Timeline
  • 08 APR 05:53Z
    Ado::Sessions versions through 0.935 for Perl generates insecure session ids
    cvelistv5