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