Auth bypass in Blair2004 Nexopos
CVE-2026-111637
NexoPOS through 6.2.4 contains a missing authentication vulnerability that allows unauthenticated attackers to read accounting transaction records via GET /api/fields/{resource}/{identifier}. Attackers can request transaction field classes like ns.entity-transaction with sequential ids to retrieve names, values, account ids, and descriptions without nexopos.read.transactions permission.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@hieuPenguinnn/nexopos-fields-endpoint-unauthenticated-transaction-di… (third-party-advisory)
- github.com/Blair2004/NexoPOS/blob/v6.2.4/routes/api-base.php (technical-description)
- github.com/Blair2004/NexoPOS/blob/v6.2.4/app/Providers/FormsProvider.php (technical-description)
- www.vulncheck.com/advisories/nexopos-through-6.2.4-unauthenticated-transaction-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111637?
- CVE-2026-111637 is a medium-severity vulnerability in Blair2004 Nexopos, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-10-16.
- How severe is CVE-2026-111637?
- Medium severity. CVSS v3 base score is 5.3 out of 10.