CVE Catalog

CVE-2026-47099

MediumCVSS 6.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.38%

30th percentile - higher than 30% of all known CVEs

Summary

TeleJSON prior to 6.0.0 contains a DOM-based XSS vulnerability in the parse() function. Attackers can deliver a crafted JSON with a malicious _constructor-name_ value, passed unsanitized to new Function(), enabling arbitrary JavaScript execution, e.g., via postMessage in cross-frame contexts.

Risk Assessment

Risk of arbitrary JavaScript execution in the victim's browser, session theft, data theft, or account takeover.

Recommendation

Update TeleJSON to version 6.0.0 or later. Do not use the parse() function on untrusted JSON data.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS