CVE-2026-56016: CGI::Session::ID::md5 0 to before 4.49

CVE-2026-56016. CVSS 3.1 base score 5.9 (MEDIUM, Source advisory). EPSS 0.00513 (percentile 0.42931), scored 24-Oct-2026.

Affected technology

CGI::Session::ID::md5 · 0 to before 4.49
MARKSTOS

Description’s affected range: versions before 4.49 for Perl generate predictable session ids from low-entropy sources

Component: Not specified by the source
Function: CGI::Session::ID::md5::generate_id
File: lib/CGI/Session/ID/md5.pm

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 5.9/10) rates confidentiality impact as high; integrity and availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 25-Oct-2026 19:52 UTC

CWE: CWE-338, CWE-340
CCR priority: 23.7 /100 (P4)
CVSS 3.1: 5.9 /10 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N · Source advisory
EPSS: 0.00513 · percentile 0.43463 · 2026-10-25
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-25 19:52:47.952465+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-25 19:51:06.643138+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-56016.html