Stored Cross-Site Scripting Vulnerability in Relevanssi Plugin for WordPress
CVE-2026-116522

7.2HIGH

Key Information:

Vendor

WordPress
Status
Relevanssi – A Better Search
Vendor
CVE Published:
31 October 2026

What is CVE-2026-116522?

The Relevanssi plugin for WordPress suffers from a vulnerability that allows unauthenticated attackers to exploit the 'comment' parameter. This weakness arises from inadequate input sanitization and output escaping in all versions up to 4.28.5. If a site has both comment indexing and highlighting features enabled, an attacker can inject malicious web scripts that execute when a user views a specially crafted page. This poses a significant risk, as the attack is executed through Relevanssi's search-result permalinks, particularly when the highlight query parameter is present.

Affected Version(s)

Relevanssi – A Better Search 0 <= 4.28.5

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/relevanssi/tag...
https://plugins.trac.wordpress.org/browser/relevanssi/tag...

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

daroo
.