CVE-2026-18436

The MailPress plugin for WordPress is vulnerable to unauthorized access in versions up to, and including, 1.5.0 via the campaign revision-restore REST endpoint (POST /wp-json/mailpress/v1/campaign/<id>/restore-revision/<revision_id>). The route in the vulnerable range was registered without a permissionCallback, allowing the restoreRevision() handler to run for unauthenticated requests and overwrite a campaign's content_html with any prior revision. This makes it possible for unauthenticated attackers to modify campaign content by restoring an arbitrary revision.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/CampaignRevisions.php#L155
https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/CampaignRevisions.php#L156
https://www.wordfence.com/threat-intel/vulnerabilities/id/793a7ef0-8938-47a6-80ed-83f69fbbb27f?source=cve

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-31 10:16

Updated : 2026-08-12 21:00

NVD link : CVE-2026-18436

Mitre link : CVE-2026-18436

CVE.ORG link : CVE-2026-18436

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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