WordPress Core < 6.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Embed Discovery

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE Not available
CVSS Medium (6.4)
Publicly Published May 16, 2023
Last Updated January 22, 2024
Researcher Jakub Zoczek
Description

WordPress Core is vulnerable to stored Cross-Site Scripting in versions up to, and including, 6.2, due to insufficient validation of the protocol in the response when processing oEmbed discovery. This makes it possible for authenticated attackers with contributor-level and above permissions to use a crafted oEmbed payload at a remote URL to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

References

1 affected software package

Software Type Core
Software Slug wordpress (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 4.1.38
  • 4.2 - 4.2.35
  • 4.3 - 4.3.31
  • 4.4 - 4.4.30
  • 4.5 - 4.5.29
  • 4.6 - 4.6.26
  • 4.7 - 4.7.26
  • 4.8 - 4.8.22
  • 4.9 - 4.9.23
  • 5.0 - 5.0.19
  • 5.1 - 5.1.16
  • 5.2 - 5.2.18
  • 5.3 - 5.3.15
  • 5.4 - 5.4.13
  • 5.5 - 5.5.12
  • 5.6 - 5.6.11
  • 5.7 - 5.7.9
  • 5.8 - 5.8.7
  • 5.9 - 5.9.6
  • 6.0 - 6.0.4
  • 6.1 - 6.1.2
  • 6.2 - 6.2.1
Patched Version
  • 4.1.38
  • 4.2.35
  • 4.3.31
  • 4.4.30
  • 4.5.29
  • 4.6.26
  • 4.7.26
  • 4.8.22
  • 4.9.23
  • 5.0.19
  • 5.1.16
  • 5.2.18
  • 5.3.15
  • 5.4.13
  • 5.5.12
  • 5.6.11
  • 5.7.9
  • 5.8.7
  • 5.9.6
  • 6.0.4
  • 6.1.2
  • 6.2.1
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