Cross-site Scripting Vulnerability in Ultimate Blocks by Ultimate Blocks
CVE-2025-49929

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Ultimate Blocks
Vendor
CVE Published:
22 October 2025

What is CVE-2025-49929?

A Cross-site Scripting (XSS) vulnerability exists in the Ultimate Blocks plugin, allowing attackers to execute malicious scripts in the context of an affected user's session. The affected versions include all prior to and up to 3.3.6. When exploited, this vulnerability can lead to unauthorized access and data exposure, as well as potential site compromise. Users are encouraged to update their plugin to mitigate associated risks.

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Affected Version(s)

Ultimate Blocks <= n/a

References

https://patchstack.com/database/Wordpress/Plugin/ultimate...
vdb-entry

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

zaim (Patchstack Alliance)
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