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TI-2026-81651 Aliases CVE-2026-117606GHSA-8px7-qjpp-cj5c

Missing authorization in NexoPOS cash register session actions

Priority MEDIUM 57CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

NexoPOS through 6.3.0 contains a missing authorization flaw (CWE-639) in which the cash register service never checks that a register session belongs to the requesting user. An authenticated cashier with the default nexopos.use.registers permission can submit closing, cash-in or cash-out actions against other cashiers' sessions, forcing them closed or altering their balances.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

NexoPOS through 6.3.0 contains a missing authorization vulnerability that allows authenticated cashiers to manipulate other cashiers' register sessions because CashRegistersService never compares used_by with the user. Attackers holding the default nexopos.use.registers permission can submit closing, cash-in, or cash-out actions to POST /api/cash-registers/{action}/{register} to force-close sessions or alter balances.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00293 22nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Blair2004NexoPOSup to 6.3.0—No fix listedCNA
  • NexoPOS VendorBlair2004 Affected up to 6.3.0 Fixed in — No fix listed CNA

Remediation

No fixed version of NexoPOS is listed.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-117606
  2. 2026-10-28 Alias added: GHSA-8px7-qjpp-cj5c
  3. 2026-11-04 CISA SSVC decision points changed
  4. 2026-11-04 Priority changed: LOW → MEDIUM

References

Patch 1

Other 3

  • TI-2026-75423 Missing authentication in NexoPOS exposes transaction records CVSS 4.0MEDIUM 6.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences