The vulnerability identified as CVE-2026-24737 is a high-severity issue affecting the jsPDF library, specifically prior to version 4.1.0. This vulnerability allows user control over the properties and methods of the Acroform module, facilitating the injection of arbitrary PDF objects, including JavaScript actions. When a victim opens the document, these actions can be executed, posing significant security risks.
The CVSS score for this vulnerability is 8.1, indicating a high severity level. The attack vector is classified as network-based, with low complexity and no privileges required for exploitation. However, user interaction is necessary, as the exploitation occurs when the user opens the malicious PDF.
Organizations utilizing jsPDF should prioritize patching to version 4.1.0 or later to mitigate this vulnerability. The urgency is further underscored by the high potential for exploitation, as attackers may leverage this vulnerability to execute unauthorized JavaScript within user environments.
Risk to organizations includes potential data leaks and unauthorized access to sensitive user information, resulting in severe reputational and operational damage.
Vulnerability Details
The official description states that jsPDF is a library used for generating PDFs in JavaScript. The Acroform module's vulnerabilities allow for the injection of arbitrary PDF objects, which is a serious concern. The specific API members affected include AcroformChoiceField.addOption, AcroformChoiceField.setOptions, AcroFormCheckBox.appearanceState, and AcroFormRadioButton.appearanceState.
The CWE classification for this vulnerability is CWE-116 (Improper Encoding or Escaping of Output), which highlights the underlying issue of unsanitized input being processed.
The vulnerability was published on February 2, 2026, and has been officially analyzed. Organizations should be aware that all versions prior to the vendor patch (4.1.0) are affected.
Technical Analysis
The root cause of this vulnerability lies in the lack of proper input sanitization within the Acroform module. Attackers can exploit this by providing unsanitized input to the vulnerable API methods, which leads to the injection of arbitrary PDF objects.
The attack vector is network-based, requiring the victim to interact with the malicious PDF document. The attack complexity is deemed low since no special privileges are needed, and the user simply needs to open the document for the payload to execute.
In terms of impact, this vulnerability can lead to significant confidentiality and integrity issues, as attackers may execute JavaScript that could exfiltrate data or manipulate user sessions. However, there is no impact on availability.
Risk & Impact Analysis
Organizations using the affected version of jsPDF are at high risk due to the potential for data breaches and unauthorized execution of scripts. The blast radius could be extensive, especially if the PDFs are widely distributed or integrated into critical applications.
The urgency of addressing this vulnerability is critical, given its high severity score and the potential for exploitation. Organizations should act swiftly to apply the necessary updates to protect against possible attacks.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of jsPDF prior to version 4.1.0 are affected by this vulnerability. Organizations should verify their implementations and ensure they are running the latest version to mitigate the risks associated with this vulnerability.
Mitigation & Remediation
To remediate this vulnerability, organizations should upgrade to jsPDF version 4.1.0 or later. If immediate patching is not feasible, it is critical to implement input validation to sanitize any user inputs passed to the Acroform module.
For further details, organizations can refer to the official release notes at jsPDF v4.1.0 release and consider conducting a thorough assessment of their PDF generation workflows.
Detection Guidance
Organizations should monitor logs for any unusual activities related to PDF generation and access. Specific indicators may include unexpected API calls to Acroform methods or increased error rates when handling PDF documents.
AppSecure Threat Intelligence Insight
The jsPDF vulnerability represents a concerning trend in the exploitation of user-controlled input in software libraries, highlighting the importance of thorough input validation. Security teams must focus on proactive measures and continuous monitoring to detect potential abuses of such vulnerabilities.
For organizations utilizing jsPDF, incorporating API security testing into their security practices can help identify vulnerabilities early in the development cycle.
Moreover, adopting a penetration testing methodology will provide ongoing assessments to ensure defenses remain robust against evolving threats.
In conclusion, the jsPDF vulnerability serves as a reminder of the critical need for secure coding practices and regular security assessments. By prioritizing these areas, organizations can significantly reduce their exposure to similar vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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