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.
- 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
- Data version
- 5.2
- Document digest
- e10c7490ecde2975d6323d46bbb0a0a0acb76358217ee02710f5c1b3fa438fc4
05 Affected products
VendorProductVersionsPlatforms
06 References
- metacpan.orghttps://metacpan.org/release/BVA/Concierge-Sessions-v0.8.4/diff/BVA/Concierge-Sessions-v0.8.5#lib/Concierge/Sessions/Base.pm
- security.metacpan.orghttps://security.metacpan.org/docs/guides/random-data-for-security.html
- www.rfc-editor.orghttps://www.rfc-editor.org/rfc/rfc9562.html#name-security-considerations
- perldoc.perl.orghttps://perldoc.perl.org/5.42.0/functions/rand
- github.comhttps://github.com/bwva/Concierge-Sessions/commit/20bb28e92e8fba307c4ff8264701c215be65e73b
07 Remediation
Upgrade to Concierge::Sessions v0.8.5 or later.