CVE-2026-39473 MEDIUM

CVE-2026-39473: WordPress Simple History plugin <= 5.24.0 - Sensitive Data Exposure vulnerability

Vendor Pär Thernström
Product Simple History
Weakness CWE-201
Published April 8, 2026
Last update April 29, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

What the vulnerability does

01Description

Insertion of Sensitive Information Into Sent Data vulnerability in Pär Thernström Simple History simple-history allows Retrieve Embedded Sensitive Data.This issue affects Simple History: from n/a through <= 5.24.0.

Explanation of Vulnerability in Simple Terms

02Summary

Simple History versions up to 5.24.0 expose sensitive information that can be read over the network without authentication. An attacker can retrieve this data directly without needing to log in or interact with a user. The vulnerability affects the confidentiality of stored information but does not allow modification or service disruption.

What an attacker can do

03Attacker Capabilities

Read sensitive information from the plugin without logging in.

Potential impact on your site

04Site Impact

Sensitive data logged by Simple History may be exposed to unauthenticated visitors.

Conditions required to exploit

05Prerequisites

Network access to the site; no authentication or user interaction required.

Key dates

06Disclosure timeline

April 8, 2026 CVE published
April 29, 2026 Record updated

Related vulnerabilities

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