Stored Cross-Site Scripting Vulnerability in Gutenverse Plugin for WordPress
CVE-2026-2868

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Gutenverse – Ultimate WordPress Fse Blocks Addons & Ecosystem
Vendor
CVE Published:
5 May 2026

What is CVE-2026-2868?

The Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem plugin exposes a serious vulnerability due to inadequate input sanitization and output escaping on the 'separatorIconSVG' parameter. This flaw allows authenticated attackers with contributor-level access and above to inject arbitrary web scripts into pages. These scripts will execute whenever users access the compromised pages, potentially leading to unauthorized actions and data exposure.

Affected Version(s)

Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem 0 <= 3.5.3

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset/3507804/gute...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Athiwat Tiprasaharn
.