WordPress Core 6.3 - 6.3.1 - Authenticated(Contributor+) Cross-Site Scripting via Footnotes Block

6.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS 6.4 (Medium)
Publicly Published October 12, 2023
Last Updated October 12, 2023
Researcher Jorge Costa

Description

WordPress Core is vulnerable to Stored Cross-Site Scripting via the footnotes block in versions between 6.3 and 6.3.1 due to insufficient input sanitization and output escaping on the footnotes block. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Wordfence blocked 4 attacks targeting this vulnerability in the past 24 hours.

References

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1 affected software package

Software Type Core
Patched? Yes
Remediation Update to version 6.3.2, or a newer patched version
Affected Version
  • 6.3 - 6.3.1
Patched Version
  • 6.3.2

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