What the vulnerability does
01Description
Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in CoSchedule CoSchedule coschedule-by-todaymade allows Retrieve Embedded Sensitive Data.This issue affects CoSchedule: from n/a through <= 3.3.11.
Explanation of Vulnerability in Simple Terms
02Summary
CoSchedule versions 3.3.11 and earlier expose sensitive information through improper exposure of internal data. An attacker on the network can read non-public information without authentication. The vulnerability has a CVSS score of 5.3, indicating moderate risk. Update to a version newer than 3.3.11 to remediate.
What an attacker can do
03Attacker Capabilities
Read sensitive information from the CoSchedule application without logging in.
Potential impact on your site
04Site Impact
Confidential data may be exposed to unauthenticated attackers, potentially including internal scheduling or configuration details.
Conditions required to exploit
05Prerequisites
Network access to the CoSchedule instance; no authentication or user interaction required.
Key dates
06Disclosure timeline
September 26, 2025
CVE published
April 28, 2026
Record updated