CVE-2026-18437: CWE-862 Missing Authorization in mailerpress MailerPress – Newsletter, email marketing & AI automation
MailerPress – Newsletter, email marketing & AI automation plugin for WordPress has a missing authorization vulnerability in the mailerpress/v1/contact endpoint. This flaw affects all versions up to and including 1.5.0 and allows unauthenticated attackers to update contact details without proper permission checks. The vulnerability has a medium severity score of 5.3.
AI Analysis
Technical Summary
CVE-2026-18437 describes a missing authorization (CWE-862) vulnerability in the MailerPress WordPress plugin. The issue arises because the mailerpress/v1/contact REST API endpoint does not perform a capability check, enabling unauthenticated attackers to modify contact information. This affects all plugin versions up to and including 1.5.0. No official patch or remediation level has been published yet, and there are no known exploits in the wild.
Potential Impact
An attacker without authentication can update contact details via the vulnerable endpoint, potentially leading to unauthorized modification of user data. The vulnerability does not impact confidentiality or availability but affects integrity, as indicated by the CVSS vector (C:N/I:L/A:N).
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the affected endpoint if possible or monitor for suspicious activity related to contact updates.
CVE-2026-18437: CWE-862 Missing Authorization in mailerpress MailerPress – Newsletter, email marketing & AI automation
Description
MailerPress – Newsletter, email marketing & AI automation plugin for WordPress has a missing authorization vulnerability in the mailerpress/v1/contact endpoint. This flaw affects all versions up to and including 1.5.0 and allows unauthenticated attackers to update contact details without proper permission checks. The vulnerability has a medium severity score of 5.3.
CVSS v3.1
Score 5.3medium
Affected software
mailerpress
MailerPress – Newsletter, email marketing & AI automation
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18437 describes a missing authorization (CWE-862) vulnerability in the MailerPress WordPress plugin. The issue arises because the mailerpress/v1/contact REST API endpoint does not perform a capability check, enabling unauthenticated attackers to modify contact information. This affects all plugin versions up to and including 1.5.0. No official patch or remediation level has been published yet, and there are no known exploits in the wild.
Potential Impact
An attacker without authentication can update contact details via the vulnerable endpoint, potentially leading to unauthorized modification of user data. The vulnerability does not impact confidentiality or availability but affects integrity, as indicated by the CVSS vector (C:N/I:L/A:N).
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the affected endpoint if possible or monitor for suspicious activity related to contact updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-07-30T20:21:38.396Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a6c6cef9c2644c7f89ec059
Added to database: 07/31/2026, 09:37:51 UTC
Last enriched: 08/07/2026, 14:54:57 UTC
Last updated: 09/14/2026, 10:01:29 UTC
Views: 48
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