WordPress Core < 6.0.3 & Gutenberg < 14.3.1 - Authenticated Cross-Site Scripting in Various Blocks

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2022-43500
CVSS Medium (6.4)
Publicly Published October 18, 2022
Last Updated April 30, 2025
Researcher Alex Concha
Description

WordPress Core in versions up to 6.0.3 and the Gutenberg plugin for WordPress in versions up to 14.3.1 are vulnerable to Stored Cross-Site Scripting due to insufficient output escaping on user supplied input. The RSS widget, Search Block, Featured Image Block, RSS Block, and Navigation Block are all affected components. This makes it possible for authenticated users with access to the block editor to inject malicious web scripts that may execute whenever accessing the page.

References

2 affected software package

Software Type Core
Software Slug wordpress (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 3.6.1
  • 3.7 - 3.7.39
  • 3.8 - 3.8.39
  • 3.9 - 3.9.37
  • 4.0 - 4.0.36
  • 4.1 - 4.1.36
  • 4.2 - 4.2.33
  • 4.3 - 4.3.29
  • 4.4 - 4.4.28
  • 4.5 - 4.5.27
  • 4.6 - 4.6.24
  • 4.7 - 4.7.24
  • 4.8 - 4.8.20
  • 4.9 - 4.9.21
  • 5.0 - 5.0.17
  • 5.1 - 5.1.14
  • 5.2 - 5.2.16
  • 5.3 - 5.3.13
  • 5.4 - 5.4.11
  • 5.5 - 5.5.10
  • 5.6 - 5.6.9
  • 5.7 - 5.7.7
  • 5.8 - 5.8.5
  • 5.9 - 5.9.4
  • 6.0 - 6.0.2
Patched Version
  • 3.7.40
  • 3.8.40
  • 3.9.38
  • 4.0.37
  • 4.1.37
  • 4.2.34
  • 4.3.30
  • 4.4.29
  • 4.5.28
  • 4.6.25
  • 4.7.25
  • 4.8.21
  • 4.9.22
  • 5.0.18
  • 5.1.15
  • 5.2.17
  • 5.3.14
  • 5.4.12
  • 5.5.11
  • 5.6.10
  • 5.7.8
  • 5.8.6
  • 5.9.5
  • 6.0.3
Software Type Plugin
Software Slug gutenberg (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 14.3.0
Patched Version
  • 14.3.1
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