प्लेटफ़ॉर्म
nodejs
घटक
convict
में ठीक किया गया
6.2.5
6.2.5
CVE-2026-33863 represents a critical prototype pollution vulnerability discovered in the convict configuration library. This flaw allows attackers to inject malicious properties into Object.prototype, potentially leading to Remote Code Execution (RCE) or other unexpected application behavior. The vulnerability affects versions of convict prior to 6.2.5, and a patch is available in version 6.2.5.
CVE-2026-33863 affects the 'convict' library, exposing two prototype pollution vulnerabilities not addressed in previous fixes. These vulnerabilities allow an attacker, by manipulating configuration data, to modify properties of the Object.prototype, potentially impacting all JavaScript code that depends on it. The first attack vector resides in the config.load() and config.loadFile() functions, where the overlay() function performs a recursive merge of configuration data without validating keys. An attacker can inject keys like proto or constructor.prototype into a JSON file, triggering recursion to Object.prototype and allowing the writing of attacker-controlled values. The second vector is found in schema initialization, where a schema with constructor.prototype.* keys can be used to inject malicious values.
This vulnerability is particularly concerning because prototype pollution can have a wide-ranging and difficult-to-diagnose impact. An attacker could use it to modify the behavior of native JavaScript functions, inject malicious code, or even take control of the application. Exploitation is relatively straightforward if the attacker has the ability to provide a malicious configuration file. The risk is exacerbated if the application uses the configuration to determine critical behavior or access to sensitive resources. The lack of input validation in config.load() and config.loadFile() facilitates the injection of malicious payloads.
The recommended mitigation is to update the 'convict' library to version 6.2.5 or higher. This version includes fixes that prevent prototype pollution by validating keys during configuration merging and schema initialization. Additionally, carefully validate and sanitize any external configuration files before loading them into the application. Implementing a Content Security Policy (CSP) can help mitigate the impact of exploitation, although it is not a complete solution. Monitoring application logs for anomalous behavior related to object manipulation can help detect exploitation attempts.
कोई आधिकारिक पैच उपलब्ध नहीं है। वैकल्पिक समाधान खोजें या अपडेट की निगरानी करें।
भेद्यता विश्लेषण और गंभीर अलर्ट सीधे आपके ईमेल में।
Prototype pollution is a vulnerability that allows an attacker to modify the properties of the Object.prototype, affecting all objects in JavaScript that inherit from it.
It is dangerous because it can allow an attacker to modify the behavior of native JavaScript functions, inject malicious code, or take control of the application.
If you cannot update immediately, consider implementing rigorous input validation on configuration files and monitoring application logs for anomalous behavior.
There are static and dynamic analysis tools that can help detect prototype pollution vulnerabilities. Consult the security tools in your environment.
Carefully validate and sanitize all user inputs, especially configuration files. Avoid using functions that can lead to prototype pollution without proper validation.
अपनी डिपेंडेंसी फ़ाइल अपलोड करें और तुरंत जानें कि यह CVE और अन्य आपको प्रभावित करती हैं या नहीं।