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CVE-2026-100175EUVD-2026-111751GHSA-37R8-FQ3J-QQ4R

Postie <= 1.9.87 - Unauthenticated Stored Cross-Site Scripting via Email Body URL Autolink

Published
Last modified
published
Not listed in CISA KEV
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

The Postie plugin for WordPress, in all versions up to and including 1.9.87, is affected. An unauthenticated attacker can inject malicious scripts through crafted emails, which are then stored on pages and run in the browser of any visitor who opens them.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Read the original description

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.

Timeline

  1. CVE published
  2. First seen by cve.now1 day
  3. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  4. Record last updated

Affected versions

  • wayneallen-1 Postie

    through 1.9.87

References 9

wordfence.com

plugins.trac.wordpress.org