CVE-2026-2439 - Concierge::Sessions versions from 0.8.1 before 0.8.5 for Perl generate insecure session ids

CVE-2026-2439 - Concierge::Sessions versions from 0.8.1 before 0.8.5 for Perl generate insecure session ids

https://cvefeed.io/rssfeed/latest.atom / Tue, 02/17/2026 - 02:02
CVE ID : CVE-2026-2439
Published : Feb. 16, 2026, 10:22 p.m. | 1 hour, 59 minutes ago
Description : Concierge::Sessions versions from 0.8.1 before 0.8.5 for Perl generate insecure session ids. The generate_session_id function in Concierge::Sessions::Base defaults to using the uuidgen command to generate a UUID, with a fallback to using Perl's built-in rand function. Neither of these methods are secure, and attackers are able to guess session_ids that can grant them access to systems. Specifically, * There is no warning when uuidgen fails. The software can be quietly using the fallback rand() function with no warnings if the command fails for any reason. * The uuidgen command will generate a time-based UUID if the system does not have a high-quality random number source, because the call does not explicitly specify the --random option. Note that the system time is shared in HTTP responses. * UUIDs are identifiers whose mere possession grants access, as per RFC 9562. * The output of the built-in rand() function is predictable and unsuitable for security applications.
Severity: 0.0 | NA
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