{"id":"CVE-2026-18436","aliases":["EUVD-2026-51507","GHSA-vfgx-g9m5-wfgv"],"status":"published","title":"MailerPress \u003c= 1.5.0 - Missing Authorization to Unauthenticated Arbitrary Modification via REST API Endpoint","description":"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/\u003cid\u003e/restore-revision/\u003crevision_id\u003e). 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.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.0039,"percentile":0.33347,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2026-07-31T08:30:15Z","modified":"2026-08-12T21:00:37Z","products":[{"vendor":"mailerpress","product":"mailerpress – newsletter, email marketing \u0026 ai automation"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/793a7ef0-8938-47a6-80ed-83f69fbbb27f?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/CampaignRevisions.php#L156"},{"url":"https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/CampaignRevisions.php#L155"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18436"},{"url":"https://github.com/advisories/GHSA-vfgx-g9m5-wfgv"}],"sources":{"cve":[{"id":"CVE-2026-18436","title":"MailerPress \u003c= 1.5.0 - Missing Authorization to Unauthenticated Arbitrary Modification via REST API Endpoint","description":"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/\u003cid\u003e/restore-revision/\u003crevision_id\u003e). 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.","status":"published","published":"2026-07-31T08:30:15.838Z","modified":"2026-07-31T10:53:34.281Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:20:12.60856Z"}],"euvd":[{"id":"EUVD-2026-51507","description":"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/\u003cid\u003e/restore-revision/\u003crevision_id\u003e). 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.","status":"published","published":"2026-07-31T08:30:15Z","modified":"2026-07-31T10:53:34Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T18:02:26.304051Z"}],"ghsa":[{"id":"GHSA-vfgx-g9m5-wfgv","title":"The MailPress plugin for WordPress is vulnerable to unauthorized access in versions up to, and...","description":"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/\u003cid\u003e/restore-revision/\u003crevision_id\u003e). 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.","status":"published","published":"2026-07-31T12:30:29Z","modified":"2026-07-31T12:30:32Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:09:59.725505Z"}],"nvd":[{"id":"CVE-2026-18436","description":"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/\u003cid\u003e/restore-revision/\u003crevision_id\u003e). 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.","status":"published","published":"2026-07-31T10:16:45.02Z","modified":"2026-08-12T21:00:37.147Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:34.290716Z"}]}}