The SlimStat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'User-Agent' header in all versions up to, and including, 5.4.11 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. The show_complete_user_agent_tooltip setting must be explicitly enabled by an administrator (disabled by default) for the stored payload to be rendered and executed.

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Fixes

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History

Thu, 28 May 2026 11:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 28 May 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Veronalabs
Veronalabs slimstat Analytics
Wordpress
Wordpress wordpress
Vendors & Products Veronalabs
Veronalabs slimstat Analytics
Wordpress
Wordpress wordpress

Thu, 28 May 2026 07:30:00 +0000

Type Values Removed Values Added
Description The SlimStat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'User-Agent' header in all versions up to, and including, 5.4.11 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. The show_complete_user_agent_tooltip setting must be explicitly enabled by an administrator (disabled by default) for the stored payload to be rendered and executed.
Title SlimStat Analytics <= 5.4.11 - Unauthenticated Stored Cross-Site Scripting via User-Agent Header
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-05-28T10:35:50.453Z

Reserved: 2026-05-01T14:38:51.276Z

Link: CVE-2026-7634

cve-icon Vulnrichment

Updated: 2026-05-28T10:35:44.771Z

cve-icon NVD

Status : Deferred

Published: 2026-05-28T08:16:36.990

Modified: 2026-05-28T13:45:25.260

Link: CVE-2026-7634

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-28T09:00:11Z

Weaknesses