Threats affecting pkg:npm/serialize-javascript

Serialize JavaScript serializes JavaScript values to a superset of JSON that includes regular expressions and functions. Prior to 7.1.3, the function-source escaping logic does not neutralize a bare closing-script prefix when attacker-influenced function source text ends exactly at that prefix. Because each function body is escaped independently, a delimiter supplied by surrounding serialized output can terminate an HTML script element, and a later serialized value supplies injected markup that becomes a live element in the page. Exploitation requires control of a serialized function's source text, such as through a spoofed toString(). This issue is fixed in version 7.1.3.

serialize-javascript versions from 7.0.1 up to but not including 7.1.3 contain a cross-site scripting (XSS) vulnerability. This flaw allows attackers to break out of HTML script elements by injecting unescaped </script> sequences via a spoofed toString() function, enabling injection of live markup such as img onerror handlers. The vulnerability is fixed in version 7.1.3.

A cross-site scripting (XSS) vulnerability exists in the serialize-javascript library versions from 7.1.1 up to but not including 7.1.2. The issue arises when function values are serialized and embedded in script elements, allowing attacker-controlled script-closing tags to prematurely terminate the script and cause subsequent content to be interpreted as HTML, enabling XSS. Ordinary data values and JSON outputs are not affected. This vulnerability is fixed in version 7.1.2.

Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted "array-like" object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5.

CVE-2024-11831 is a cross-site scripting (XSS) vulnerability in the serialize-javascript npm package version 6.0. The flaw arises because the module does not properly sanitize certain inputs such as regex or other JavaScript object types, allowing malicious code injection. This vulnerability is critical in scenarios where serialized data is sent to web clients and deserialized by browsers, potentially compromising web application security.