Key Points
- Foxit PDF Editor Cloud vulnerabilities allow arbitrary JavaScript execution.
- Issues identified in File Attachments and Layers panel.
- Security patches released; no user action needed for Cloud versions.
Overview of the Foxit PDF Editor Vulnerabilities
Recent security updates have addressed critical vulnerabilities in Foxit PDF Editor Cloud, specifically cross-site scripting (XSS) flaws that could permit attackers to execute arbitrary JavaScript within users’ browsers. These vulnerabilities were identified in the application’s File Attachments list and Layers panel, where inadequate input validation and improper output encoding were found.
The issues have been cataloged under two identifiers: CVE-2026-1591 and CVE-2026-1592. Both vulnerabilities share a common root cause, which is the lack of proper sanitization of user inputs in layer names and attachment file names. When users interact with these inputs, the potential for malicious code execution arises.
Technical Details and Impact Assessment
The identified vulnerabilities are classified under CWE-79 (Cross-site Scripting) and possess a CVSS 3.0 score of 6.3, indicating a moderate severity level. The attack vector is network-based, with a low attack complexity, requiring minimal privileges and user interaction. These conditions make the vulnerabilities particularly concerning as they could allow attackers to access sensitive information visible to authenticated users.
Despite the moderate severity rating, the requirement for user interaction limits the attack surface. Attackers must deceive users into opening malicious documents or interacting with crafted payloads within the application’s interfaces.
- CVE-2026-1591: Cross-site Scripting (CWE-79), CVSS Score 6.3
- CVE-2026-1592: Cross-site Scripting (CWE-79), CVSS Score 6.3
Security Measures and Recommendations
Foxit has promptly released security patches for these vulnerabilities as part of the February 3, 2026 update for Foxit PDF Editor Cloud. For Cloud versions, no user action is necessary as updates are automatically applied. However, users of desktop versions should ensure they have the latest updates through the application’s update feature.
Organizations utilizing Foxit PDF Editor are advised to confirm their software is updated to the latest version. Additionally, revising file handling practices and limiting user access to specific PDF editing features may enhance security according to organizational policies.
Conclusion
The addressed vulnerabilities highlight the importance of maintaining updated software to safeguard against potential cyber threats. Foxit’s prompt response and automatic update mechanism for Cloud users exemplify proactive security measures. Continued vigilance and adherence to security best practices will be crucial in protecting sensitive data from similar threats in the future.
