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01 Record

CVE-2026-2439

Concierge::Sessions versions from 0.8.1 before 0.8.5 for Perl generate insecure session ids

CriticalPUBLISHEDCNA: CPANSec
CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

02 Description

Concierge::Sessions versions from 0.8.1 before 0.8.5 for Perl generate insecure session ids

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.46% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 40.2% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-02-16 21:25Z8 MO AGO
Last updated
2026-02-17 14:45Z8 MO AGO
Reserved
2026-02-12
Assigning CNA
CPANSec
Record state
PUBLISHED
Severity
Critical (CVSS 9.8)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)Base
  • CWE-340Generation of Predictable Numbers or IdentifiersClass
Data version
5.2
Document digest
e10c7490ecde2975d6323d46bbb0a0a0acb76358217ee02710f5c1b3fa438fc4

05 Affected products

VendorProductVersionsPlatforms
BVAConcierge::Sessions0.8.1 to < 0.8.5—

06 References

07 Remediation

Upgrade to Concierge::Sessions v0.8.5 or later.