CVE-2025-68643 Overview
Axigen Mail Server before version 10.5.57 contains a stored Cross-Site Scripting (XSS) vulnerability in the handling of the timeFormat account preference parameter. This vulnerability allows attackers to inject malicious JavaScript payloads that execute when victims access the WebMail interface, potentially leading to session hijacking, credential theft, or further compromise of the mail server environment.
Critical Impact
Attackers can execute arbitrary JavaScript in the context of authenticated WebMail users, enabling session hijacking, credential theft, and potential lateral movement within the organization's email infrastructure.
Affected Products
- Axigen Mail Server versions prior to 10.5.57
- Axigen WebMail interface components
Discovery Timeline
- 2026-02-05 - CVE-2025-68643 published to NVD
- 2026-02-05 - Last updated in NVD database
Technical Details for CVE-2025-68643
Vulnerability Analysis
This stored XSS vulnerability occurs due to insufficient input sanitization of the timeFormat account preference parameter in Axigen Mail Server's WebMail interface. The vulnerability follows a multi-stage attack pattern that increases its severity and potential impact on enterprise mail environments.
The attack chain requires initial access to modify the user's account preferences, either through a separate vulnerability or by leveraging compromised credentials. Once the malicious payload is stored in the timeFormat preference field, it persists in the backend storage and awaits execution.
When an affected user authenticates to the WebMail interface, the application retrieves the stored timeFormat value and inserts it directly into the Document Object Model (DOM) without proper sanitization or encoding. This causes the injected JavaScript to execute within the victim's browser session, inheriting all privileges and session tokens of the authenticated user.
Root Cause
The root cause is improper input validation and output encoding of the timeFormat account preference parameter. The WebMail application fails to sanitize user-controllable input before storing it and subsequently fails to properly encode this data when rendering it in the DOM. This lack of defense-in-depth allows stored XSS payloads to persist and execute across user sessions.
Attack Vector
The exploitation of this vulnerability follows a two-stage attack methodology:
Stage 1 - Payload Injection: The attacker must first inject a malicious JavaScript payload into the victim's timeFormat preference. This can be achieved through a separate vulnerability (such as CSRF or another injection flaw) or by using previously compromised credentials to directly modify account settings.
Stage 2 - Payload Execution: When the victim logs into the WebMail interface, the application loads account preferences from storage. The unsanitized timeFormat value containing the malicious script is inserted into the DOM, triggering execution of the injected JavaScript in the context of the victim's authenticated session.
The attacker's script can then access session cookies, perform actions on behalf of the user, exfiltrate sensitive email data, or establish persistent access through additional payloads.
Detection Methods for CVE-2025-68643
Indicators of Compromise
- Unusual or malformed values in user account preference fields, particularly timeFormat
- JavaScript code fragments or HTML tags stored in preference database fields
- Unexpected outbound network connections originating from WebMail browser sessions
- Anomalous DOM modifications or script injections detected by browser security tools
Detection Strategies
- Monitor Axigen WebMail application logs for preference modification events with suspicious payloads
- Implement Content Security Policy (CSP) headers to detect and block inline script execution attempts
- Deploy Web Application Firewall (WAF) rules to identify XSS patterns in HTTP requests targeting preference endpoints
- Utilize endpoint detection solutions to identify browser-based script injection behaviors
Monitoring Recommendations
- Enable detailed logging for all account preference modifications in Axigen Mail Server
- Configure alerts for preference values containing script tags, event handlers, or encoded JavaScript
- Monitor for unusual authentication patterns that may indicate compromised credentials used for payload injection
- Review WebMail access logs for sessions exhibiting abnormal behavior following preference loads
How to Mitigate CVE-2025-68643
Immediate Actions Required
- Upgrade Axigen Mail Server to version 10.5.57 or later immediately
- Audit existing user account preferences for potentially malicious content in the timeFormat field
- Reset any compromised accounts that may have been used to inject malicious payloads
- Implement Content Security Policy headers to provide defense-in-depth against XSS execution
Patch Information
Axigen has addressed this vulnerability in Mail Server version 10.5.57. Organizations should prioritize upgrading to this version or later to remediate the stored XSS vulnerability. The updated software is available from the Axigen Mail Server Download page.
For detailed technical information about this vulnerability, refer to the Axigen WebMail XSS Vulnerability Report.
Workarounds
- Implement strict Content Security Policy headers with script-src 'self' to block inline script execution
- Deploy a Web Application Firewall with XSS detection rules in front of the Axigen WebMail interface
- Restrict access to WebMail preference modification endpoints to trusted networks only
- Consider disabling customizable time format preferences temporarily until patching is complete
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
