CVE-2026-100175: medium-severity vulnerability in wayneallen-1 Postie
Postie <= 1.9.87 - Unauthenticated Stored Cross-Site Scripting via Email Body URL Autolink
Published · Updated
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.4epss 0.3%
exploitation probability
0.3%top 74% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Affected products
wayneallen-1 · PostieReferences
https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/lib/autolink.php#L129https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/lib/autolink.php#L136https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/lib/autolink.php#L220https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/postie-filters.php#L475https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/postie-message.php#L1311https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/postie-message.php#L607https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/postie.php#L241https://plugins.trac.wordpress.org/changeset/3751269https://www.wordfence.com/threat-intel/vulnerabilities/id/5b7d5d53-51a0-4d45-a180-0bde9edd8f4c?source=cve