CVE-2026-1245 is classified as a medium-severity code injection vulnerability found in the Keichi binary-parser library. This vulnerability allows arbitrary JavaScript code execution when untrusted values are used in parser field names or encoding parameters. Specifically, the binary-parser library directly interpolates these values into dynamically generated code without sanitization, which may enable attackers to execute arbitrary code in the context of the Node.js process.
The CVSS score for this vulnerability is 6.5, indicating a medium level of severity. Organizations using the affected versions of the binary-parser library should be aware of the potential risks associated with this vulnerability. The ability for an attacker to execute arbitrary code can lead to significant consequences, including data breaches or system compromise.
As of now, there are no known exploits or proof-of-concept code available for this vulnerability. However, organizations should remain vigilant and monitor for any updates or patches that may be released. Given the nature of the vulnerability, it is essential for defenders to prioritize remediation to avoid potential exploitation.
Organizations should address this vulnerability in their priority patch cycle. The longer the vulnerability remains unpatched, the greater the risk to their systems and data.
Vulnerability Details
The official CVE description highlights that this vulnerability allows arbitrary JavaScript code execution when untrusted values are used in parser field names or encoding parameters. The library's lack of sanitization of these values poses a significant risk, as it allows for direct code injection into the Node.js process.
This vulnerability is classified under CWE-94, which pertains to code injection vulnerabilities. The attack vector is network-based, and the attack complexity is low, meaning that it does not require any specialized knowledge or privileges to exploit. The integrity impact is low, and the confidentiality impact is also low, while there is no availability impact associated with this vulnerability.
Technical Analysis
The root cause of this vulnerability lies in the way the binary-parser library processes untrusted input. By directly interpolating values into dynamically generated code without proper sanitization, the library opens itself up to potential code injection attacks. Attackers may leverage this flaw to execute arbitrary JavaScript code within the context of the Node.js process, which could result in data theft, system manipulation, or further exploitation.
The attack vector is classified as network-based, allowing attackers to exploit this vulnerability remotely. With a low attack complexity, the barrier to exploitation is minimal, making this vulnerability particularly concerning for organizations that utilize the binary-parser library.
No privileges are required for exploitation, and user interaction is not needed. This increases the potential for exploitation, as attackers can target systems without needing any user involvement.
Given these factors, organizations must assess the potential impacts of this vulnerability on their systems. The risk to confidentiality and integrity is notable, as attackers could manipulate or access sensitive information.
Risk & Impact Analysis
The potential risk to organizations using the binary-parser library includes unauthorized code execution, which can lead to data breaches and system compromise. The blast radius of this vulnerability can be significant, as it may affect any application relying on the vulnerable library, creating a widespread impact across systems.
Organizations should assess their environment to determine if they are using the affected versions of the binary-parser library. Given the medium severity score, it is crucial to address this vulnerability in the next patch cycle to reduce the risk of exploitation and protect sensitive data.
According to the EPSS score, which is 0.00068, this vulnerability is in the lower percentile of risk. However, the potential for exploitation and the nature of the issue warrant immediate attention.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerable versions of the binary-parser library are all versions prior to 2.3.0. Organizations utilizing this library should upgrade to version 2.3.0 or later to mitigate the risks associated with this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching the binary-parser library immediately. Upgrading to version 2.3.0 or later will resolve this vulnerability. In cases where immediate patching is not feasible, consider implementing input validation and sanitization measures to mitigate the risk of code injection.
For more information on security testing, organizations can refer to the penetration testing services offered. Regular security assessments can help identify similar vulnerabilities in the future.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor application logs for unusual behavior related to the binary-parser library. Behavioral anomalies, such as unexpected JavaScript execution or modifications to data, can indicate an attempted exploit.
Additionally, network signatures related to command and control traffic should be analyzed to identify potential communication with malicious actors attempting to exploit this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-1245 lies in the ongoing trend of code injection vulnerabilities within libraries. As organizations increasingly rely on third-party libraries, the potential for similar vulnerabilities remains high. Security teams should ensure that they are continuously monitoring their dependencies for known vulnerabilities and applying updates swiftly.
This vulnerability serves as a reminder to implement secure coding practices, particularly concerning input validation. Organizations can learn from this incident by prioritizing security assessments and establishing a routine for dependency management.
For further reading on improving application security, explore the following resources: vulnerability management program and penetration testing methodology best practices.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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