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Relevanssi — A Better Search Free & Premium <= 2.16.3 & 4.14.3 - Stored Cross-Site Scripting

8e12d132-c036-4665-bb8d-e31e2b155fbdPublished · Updated

Action summary

Relevanssi Premium: Affected: <2.16.3Update to 2.16.4 or newer

Relevanssi – A Better Search: Affected: <4.14.3Update to 4.14.4 or newer

All remediation steps
Watch plugin
Severity
High7.2
CVSS
7.2
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:C Scope
Changed
C:L Confidentiality
Low
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-79 Cross-Site Scripting
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Relevanssi Premium relevanssi-premium

  1. Affected< 2.16.3
  2. Patched in2.16.4

Update to 2.16.4 or newer.

You are affected if you run < 2.16.3. Version 2.16.4 and later are not affected by this issue.

Relevanssi – A Better Search relevanssi

  1. Affected< 4.14.3
  2. Patched in4.14.4

Update to 4.14.4 or newer.

You are affected if you run < 4.14.3. Version 4.14.4 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Relevanssi Premium.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 2.16.4, or a newer patched version
  2. Update to version 4.14.4, or a newer patched version
  3. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  4. Watch Relevanssi Premium to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to msaari.

The Relevanssi - A Better Search Free & Premium plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘$query_link ’ parameter in versions up to, and including, 2.16.3 & 4.14.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in Relevanssi Premium

All 16
More vulnerabilities in Relevanssi Premium
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via '_rt' Parameter
≤2.31.4Update to 2.31.5
CVE-2026-103426
Medium6.5Authenticated (Contributor+) SQL Injection
≤2.30.2Update to 2.30.3
CVE-2026-15941
Medium6.5Authenticated (Contributor+) SQL Injection
<2.29.0Update to 2.29.0
CVE-2025-14719
Medium4.7Unauthenticated Stored Cross-Site Scripting via Excerpt Highlights
≤2.27.6Update to 2.27.7
CVE-2025-5016
High7.5Unauthenticated SQL Injection
≤2.27.5Update to 2.27.6
CVE-2025-4396

Same weakness (Cross-Site Scripting)

All Cross-Site Scripting
Other Cross-Site Scripting vulnerabilities
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity high, CVSS 7.2

  2. Record last updated

Sources & licenses

Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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