CVE-2026-27410

WordPress Slimstat Analytics plugin < 5.4.0 - Deserialization of untrusted data vulnerability

Published Jun 17, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Description

Unauthenticated Deserialization of untrusted data in Slimstat Analytics < 5.4.0 versions.

Analysis

Technical impact

Unauthenticated deserialization of untrusted data in WordPress Slimstat Analytics plugin versions prior to 5.4.0 allows an attacker to supply malicious input that is unchecked during processing, and based on the description, it is inferred that this could lead to remote code execution or other arbitrary behavior, as identified by CWE-502.

Affected Systems

VeronaLabs Slimstat Analytics plugin for WordPress users running any version older than 5.4.0 is affected. No specific minor releases are listed, so all earlier releases remain vulnerable.

Risk and Exploitability

The CVSS score of 6.5 indicates a moderate risk, compounded by the lack of an authentication requirement. EPSS is not provided, and the vulnerability is not currently in CISA KEV, but the ability to exploit it without credentials means that an attacker can target the plugin directly via a specially crafted request, especially one sent to the plugin’s REST or AJAX endpoints, which is likely the entry point.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

VeronaLabs

Slimstat Analytics

unaffected

Version	Status	Constraints
`n/a`	affected	< 5.4.0

No data.

Vendor Product Versions

Veronalabs

Slimstat Analytics

Version	Status	Scheme	Platform
`[0,5.4.0)`	affected	semver	—

Wordpress

Version	Status	Scheme	Platform
`—`	unaffected	—	—

Remediation

Vendor Solution

Update the WordPress Slimstat Analytics Plugin to the latest available version (at least 5.4.0).

OpenCVE Recommended Actions

Update the WordPress Slimstat Analytics Plugin to version 5.4.0 or later.
If the plugin is not required, uninstall or permanently disable it to eliminate the attack surface.
Regularly review installed plugins and apply vendor‑issued security patches as soon as they become available.

Generated by OpenCVE AI on June 18, 2026 at 14:08 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.274% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://patchstack.com/database/wordpress/plugin/wp-slimstat/vulnerability/wordpress-slimstat-analytics-plugin-5-4-0-deserialization-of-untrusted-data-vulnerability?_s_id=cve

History

Jun 18, 2026 4:45 AM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Jun 17, 2026 1:15 PM First appearance in the feed. Affected vendors updated View changes

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

Jun 17, 2026 11:15 AM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		Unauthenticated Deserialization of untrusted data in Slimstat Analytics < 5.4.0 versions.
Title		WordPress Slimstat Analytics plugin < 5.4.0 - Deserialization of untrusted data vulnerability
Weaknesses		CWE-502
References		https://patchstack.com/database/wordpress/plugin/wp-slimstat/vulnerability/wordpress-slimstat-analytics-plugin-5-4-0-deserialization-of-untrusted-data-vulnerability?_s_id=cve
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L'}`