CVE-2022-37308 in OX App Suite
Summary
by MITRE • 12/26/2022
OX App Suite through 7.10.6 allows XSS via HTML in text/plain e-mail messages.
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Analysis
by VulDB Data Team • 06/18/2026
The vulnerability identified as CVE-2022-37308 affects OX App Suite versions up to and including 7.10.6, representing a cross-site scripting vulnerability that arises from improper handling of HTML content within text/plain email messages. This flaw demonstrates a classic insufficient input validation issue where the email client fails to adequately sanitize or escape HTML markup before rendering email content, creating an avenue for malicious actors to inject harmful scripts into email interfaces.
The technical exploitation of this vulnerability occurs when an attacker sends an email containing malicious HTML code within a text/plain message body. The OX App Suite application processes this content without proper sanitization, allowing the HTML to be rendered directly in the email client interface. When a victim opens the malicious email, the embedded HTML code executes within the context of the web application, potentially enabling attackers to steal session cookies, perform unauthorized actions, or redirect users to malicious websites. This vulnerability specifically targets the email rendering engine's handling of text/plain content types, where HTML tags are not properly escaped or filtered, creating a vector for script execution.
The operational impact of CVE-2022-37308 extends beyond simple script injection, as it represents a significant security risk for organizations relying on OX App Suite for email communication. The vulnerability could enable attackers to establish persistent access to user accounts through session hijacking, facilitate phishing attacks by redirecting users to fraudulent sites, or execute arbitrary code within the victim's browser context. Organizations using this email platform face potential data breaches, unauthorized access to sensitive communications, and compromise of user credentials, particularly in environments where email is the primary communication channel for business operations.
Security professionals should consider this vulnerability in the context of CWE-79, which describes cross-site scripting flaws, and align it with ATT&CK technique T1566.001 for credential access through spearphishing. The vulnerability's classification as a server-side rendering issue means that mitigation efforts must focus on input sanitization and output encoding within the email processing pipeline. Organizations should implement immediate patching strategies targeting the specific version affected, while also deploying additional security controls such as email filtering solutions that can detect and block malicious HTML content. The remediation process should include comprehensive testing of email rendering functionality to ensure that HTML content is properly escaped and that no similar vulnerabilities exist in other content processing pathways within the application.
Organizations should also consider implementing email security gateways that can inspect and sanitize incoming email content before it reaches the user's inbox, particularly focusing on the text/plain content type handling. The vulnerability highlights the importance of proper content security policies and the need for robust input validation across all email processing components. Security teams must conduct thorough vulnerability assessments to identify potential similar issues in other email handling functions and ensure that all user-supplied content undergoes appropriate sanitization before being rendered in web interfaces. The incident underscores the critical need for regular security updates and the implementation of defense-in-depth strategies to protect against increasingly sophisticated email-based attack vectors.