The Postie plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Email Body URL Autolink in all versions up to, and including, 1.9.87 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is possible because the ?postie=get-mail endpoint is reachable by unauthenticated users with no capability check, and the email processing path removes WordPress's kses output filters before saving raw markup, allowing the unescaped href attribute value to be stored as post content.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 4
- StatusPublished → DeferredNVD modified 2026-10-28 13:46
- StatusReceived → PublishedNVD modified 2026-10-28 06:45
- StatusPublished → ReceivedNVD modified 2026-10-28 07:16
- First seenCVSS 5.4 · wayneallen-1NVD modified 2026-10-28 06:45
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 9
- https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/lib/autolink.php#L129
- https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/lib/autolink.php#L136
- https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/lib/autolink.php#L220
- https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/postie-filters.php#L475
- https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/postie-message.php#L1311
- https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/postie-message.php#L607
- https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/postie.php#L241
- https://plugins.trac.wordpress.org/changeset/3751269
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5b7d5d53-51a0-4d45-a180-0bde9edd8f4c?source=cve