https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Mon, 19 Oct 2026 15:09:25 +0000 https://cve.radiocsirt.org/vuln/euvd-2026-336850 EUVD-2026-336850 https://cve.radiocsirt.org/vuln/euvd-2026-336850 https://cve.radiocsirt.org/vuln/fkie_cve-2026-47099 <p>TeleJSON prior to 6.0.0 contains a DOM-based cross-site scripting vulnerability in the parse() function that allows attackers to execute arbitrary JavaScript by delivering a crafted JSON payload containing a malicious _constructor-name_ property value. The custom reviver passes the constructor name directly to new Function() without sanitization when recreating object prototypes, enabling attackers to inject arbitrary JavaScript through vectors such as postMessage in cross-frame communication contexts to achieve script execution within the application.</p> <p>TeleJSON prior to 6.0.0 contains a DOM-based cross-site scripting vulnerability in the parse() function that allows attackers to execute arbitrary JavaScript by delivering a crafted JSON payload containing a malicious _constructor-name_ property value. The custom reviver passes the constructor name directly to new Function() without sanitization when recreating object prototypes, enabling attackers to inject arbitrary JavaScript through vectors such as postMessage in cross-frame communication contexts to achieve script execution within the application.</p> https://cve.radiocsirt.org/vuln/fkie_cve-2026-47099 https://cve.radiocsirt.org/vuln/ghsa-ccgf-5rwj-j3hv <p><strong>Affected:</strong> npm: telejson</p> <p>## Summary telejson versions prior to 6.0.0 (released 2022) are vulnerable to DOM-based Cross-Site Scripting (XSS) through unsafe deserialisation. Attacker-controlled input from the `_constructor-name_` property in parsed JSON is passed directly to `new Function()` without sanitisation, allowing arbitrary JavaScript execution. ## Affected versions | Package | Affected | Fixed | |----------|-----------|----------| | telejson | &lt; 6.0.0 | &gt;= 6.0.0 | ## Details telejson&#39;s `parse()` function uses a custom reviver to reconstruct JavaScript objects from serialised JSON. When processing objects with a `_constructor-name_` property, the reviver passes the constructor name directly to `new Function()` to recreate the object&#39;s prototype. In versions prior to 6.0.0, this constructor name is not sanitised. An attacker who can deliver a crafted JSON payload to `telejson.parse()` (for example, via `postMessage` in applications that use telejson for cross-frame communication) can inject arbitrary JavaScript into the `new Function()` call. **Vulnerable code** ([`src/index.ts`, lines 293-299 at v5.3.3](https://github.com/storybookjs/telejson/blob/v5.3.3/src/index.ts#L293-L299)): ```ts if (isObject&lt;ValueContainer&gt;(value) &amp;&amp; value[&#39;_constructor-name_&#39;]) { const name = value[&#39;_constructor-name_&#39;]; if (name !== &#39;Object&#39;) { const Fn = new Function(`return function ${name}(){}`)(); Object.setPrototypeOf(value, new Fn()); } ``` **Fixed code** ([`src/index.ts`…</p> <p><strong>Affected:</strong> npm: telejson</p> <p>## Summary telejson versions prior to 6.0.0 (released 2022) are vulnerable to DOM-based Cross-Site Scripting (XSS) through unsafe deserialisation. Attacker-controlled input from the `_constructor-name_` property in parsed JSON is passed directly to `new Function()` without sanitisation, allowing arbitrary JavaScript execution. ## Affected versions | Package | Affected | Fixed | |----------|-----------|----------| | telejson | &lt; 6.0.0 | &gt;= 6.0.0 | ## Details telejson&#39;s `parse()` function uses a custom reviver to reconstruct JavaScript objects from serialised JSON. When processing objects with a `_constructor-name_` property, the reviver passes the constructor name directly to `new Function()` to recreate the object&#39;s prototype. In versions prior to 6.0.0, this constructor name is not sanitised. An attacker who can deliver a crafted JSON payload to `telejson.parse()` (for example, via `postMessage` in applications that use telejson for cross-frame communication) can inject arbitrary JavaScript into the `new Function()` call. **Vulnerable code** ([`src/index.ts`, lines 293-299 at v5.3.3](https://github.com/storybookjs/telejson/blob/v5.3.3/src/index.ts#L293-L299)): ```ts if (isObject&lt;ValueContainer&gt;(value) &amp;&amp; value[&#39;_constructor-name_&#39;]) { const name = value[&#39;_constructor-name_&#39;]; if (name !== &#39;Object&#39;) { const Fn = new Function(`return function ${name}(){}`)(); Object.setPrototypeOf(value, new Fn()); } ``` **Fixed code** ([`src/index.ts`…</p> https://cve.radiocsirt.org/vuln/ghsa-ccgf-5rwj-j3hv