In ConnectWise PSA versions older than 2026.1, Time Entry notes stored in the Time Entry Audit Trail may be rendered without applying output encoding to certain content. Under specific conditions, this may allow stored script code to execute in the context of a user’s browser when the affected content is displayed.
The CVSS score for this vulnerability is 8.7, categorizing it as high severity. This score indicates a significant risk to organizations, especially given the potential for attackers to exploit this vulnerability to execute arbitrary scripts in users' browsers.
Risk to organizations includes potential unauthorized access to sensitive information and the ability for attackers to manipulate content displayed to users. Given the exploitability of this vulnerability, organizations should prioritize patching immediately.
Currently, there are no known exploits or public proofs of concept available, but the nature of the vulnerability warrants immediate attention to avoid the risk of exploitation.
Vulnerability Details
The vulnerability identified as CVE-2026-0695 affects ConnectWise Professional Service Automation. When Time Entry notes are stored in the Time Entry Audit Trail, they may be displayed without proper output encoding. This is classified under CWE-79, which pertains to improper neutralization of input during web page generation ('Cross-site Scripting').
The CVSS vector string is CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N, indicating the attack vector is network-based, with a low attack complexity, and requiring low privileges with user interaction. The impacts to confidentiality and integrity are both high, while availability remains unaffected.
The vulnerability was published on January 16, 2026, and has been classified as 'Modified' in terms of its status.
Technical Analysis
The root cause of this vulnerability stems from the failure to apply output encoding to Time Entry notes stored within the audit trail. This oversight can lead to the execution of malicious scripts if the affected content is rendered in a user’s browser.
The attack vector is network-based, requiring an attacker to send crafted input that is subsequently stored and rendered by the affected application. The attack complexity is considered low, as it does not require advanced skills or specific conditions outside of user interaction.
Privileges required are low, meaning an attacker can exploit the vulnerability without needing elevated permissions. User interaction is required to trigger the execution of the script, as the malicious content would need to be viewed in a user's browser.
The potential impacts are severe, with high risks to confidentiality and integrity of data. Attackers may leverage this vulnerability to steal sensitive information or manipulate user accounts.
Risk & Impact Analysis
Real-world deployment risk is significant due to the nature of the vulnerability and its potential impact on users. The ability to execute scripts in the context of a user's browser presents a high blast radius, as it could affect any user accessing the Time Entry notes.
Given the high CVSS score of 8.7, organizations should categorize this vulnerability as a high priority for immediate remediation. The potential for exploitation, even without known exploits, necessitates proactive measures to secure applications.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of ConnectWise Professional Service Automation prior to 2026.1.
Mitigation & Remediation
To mitigate this vulnerability, organizations should upgrade to ConnectWise PSA version 2026.1 or later. If immediate patching is not possible, consider implementing input validation and output encoding practices as workarounds to prevent malicious script execution.
Additionally, organizations should perform regular security assessments and consider engaging in penetration testing to identify potential vulnerabilities.
Detection Guidance
To detect potential exploitation, organizations should monitor logs for unusual script execution or changes in Time Entry notes. Behavioral anomalies in user interactions with the application may also indicate attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-0695 illustrates the critical importance of secure coding practices, particularly in applications that handle user input. Security teams should prioritize comprehensive testing and validation processes to mitigate risks associated with similar vulnerabilities.
This vulnerability represents a pattern seen in web applications where improper input handling leads to severe security risks. Organizations should ensure their development methodologies incorporate security from the ground up.
For more insights and best practices, organizations can refer to our penetration testing methodology and consider investing in vulnerability management programs to ensure ongoing security.
By addressing these vulnerabilities proactively, organizations can safeguard against potential threats and enhance their overall security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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