Medium severity · published May 7, 2025
CVE-2025-4054
Relevanssi <= 4.24.3 (Free) and <= 2.27.4 (Premium) - Unauthenticated Stored Cross-Site Scripting via Search Highlights
6.1
CVSS
0.4%
EPSS
No
On KEV
Description
The Relevanssi – A Better Search plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the highlights functionality in all versions up to, and including, 4.24.3 (Free) and <= 2.27.4 (Premium), 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 via the search results.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RP
Relevanssi Premium · Relevanssi
through 2.27.4 · source: vendor
RA
Relevanssi – A Better Search · comesio
through 4.24.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-4054
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-4054
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.24.3/lib/excerpts-highlights.php#L508
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.24.3/lib/excerpts-highlights.php#L683
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3283795/
www.relevanssi.com
https://www.relevanssi.com/user-manual/installing-relevanssi-and-adjusting-the-settings/
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/6f77f10b-f142-4859-a941-0fbde6ef7fdb?source=cve
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