Add Subtitle <= 1.1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2021-24897
CVSS 7.4 (High)
Publicly Published January 26, 2022
Last Updated December 5, 2022
Researcher Francesco Carlucci


The Add Subtitle WordPress plugin through 1.1.0 does not sanitise or escape the sub-title field (available only with classic editor) when output in the page, which could allow users with a role as low as contributor to perform Cross-Site Scripting attacks.



1 affected software package

Software Type Plugin
Software Slug add-subtitle (view on
Patched? No
Remediation No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
Affected Version
  • <= 1.1.0

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