cvedb.io
CVE-2026-2439
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-02-16T22:22:41.470 · Last modified 2026-06-17T10:30:57.400

Summary

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 re

Affected products

bva — concierge\

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.