High severity · published Jan 9, 2026
CVE-2025-15055
SlimStat Analytics <= 5.3.4 - Unauthenticated Stored Cross-Site Scripting via 'notes/resource' Parameters
7.2
CVSS
0.3%
EPSS
No
On KEV
Description
The SlimStat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'notes' and 'resource' parameters in all versions up to, and including, 5.3.4 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 an administrator accesses the Recent Custom Events report.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
SlimStat Analytics · veronalabs
through 5.3.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-15055
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-15055
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3429990/wp-slimstat
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/afbfabfc-b923-4fe9-9e8f-0cf159f488db?source=cve
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