{"cve":"CVE-2026-47099","nvd":{"published":"2026-05-20T20:16:41.063","modified":"2026-10-08T16:17:16.807","status":"Deferred","description":"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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","score":2.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79"],"references":["https://github.com/Niccolo10/Security-Advisories/blob/main/CVE-2026-47099/cve-2026-47099.md","https://github.com/storybookjs/telejson/security/advisories/GHSA-ccgf-5rwj-j3hv","https://www.vulncheck.com/advisories/telejson-dom-based-xss-via-parse-function"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:35:16.954578616+00:00"},"epss":{"cve":"CVE-2026-47099","score":0.00358,"percentile":0.29228,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-ccgf-5rwj-j3hv","url":"https://osv.dev/vulnerability/GHSA-ccgf-5rwj-j3hv","summary":"TeleJSON: DOM XSS via unsanitised constructor name in `new Function()`","modified":"2026-06-08T20:30:58.177124366Z","packages":[{"ecosystem":"npm","name":"telejson","purl":"pkg:npm/telejson","ranges":["<6.0.0"],"fixed":["6.0.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}