CVE-2026-47099TeleJSON < 6.0.0 DOM-based XSS via parse() Function
Updated under an hour ago ()
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It affects storybookjs telejson. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
storybookjs telejson storybookjs:telejson (from the name) | before 6.0.0 | CNA record |
References
- https://github.com/storybookjs/telejson/security/advisories/GHSA-ccgf-5rwj-j3hvvendor-advisory
- https://github.com/Niccolo10/Security-Advisories/blob/main/CVE-2026-47099/cve-2026-47099.mdtechnical-description
- https://www.vulncheck.com/advisories/telejson-dom-based-xss-via-parse-functionthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.