CVE-2026-18510

Summary

The TranslatePress – Translate Multilingual sites with AI Translation plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content (URL-encoded gettext markers) in all versions up to, and including, 3.2.6 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. Comment moderation may delay exploitation for first-time commenters, but does not prevent it, as the payload uses only WordPress-permitted tags and attributes with percent-encoded characters that pass wp_kses URL validation unmodified.

Affected Software

Weaknesses

• CWE-79: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

• https://www.wordfence.com/threat-intel/vulnerabilities/id/ca97a718-7508-4bc0-8f8e-7849eb9a0dc0?source=cve
• https://plugins.trac.wordpress.org/browser/translatepress-multilingual/tags/3.2.6/includes/class-translation-render.php#L1575
• https://plugins.trac.wordpress.org/browser/translatepress-multilingual/tags/3.2.6/includes/class-translation-render.php#L1314
• https://plugins.trac.wordpress.org/browser/translatepress-multilingual/tags/3.2.6/includes/class-translation-render.php#L1232
• https://plugins.trac.wordpress.org/changeset?reponame=&new=3634273%40translatepress-multilingual%2Ftags%2F3.3&old=3624567%40translatepress-multilingual%2Ftags%2F3.2.6
• https://plugins.trac.wordpress.org/changeset/3634273/translatepress-multilingual/trunk/includes/class-translation-render.php
• https://plugins.trac.wordpress.org/changeset?old_path=%2Ftranslatepress-multilingual/tags/3.2.6&new_path=%2Ftranslatepress-multilingual/tags/3.3

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