CVE-2026-47099

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 v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
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

Configurations

No configuration.

History

21 May 2026, 15:19

Type	Values Removed	Values Added
References		() https://github.com/Niccolo10/Security-Advisories/blob/main/CVE-2026-47099/cve-2026-47099.md -

20 May 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-20 20:16

Updated : 2026-07-14 22:16

NVD link : CVE-2026-47099

Mitre link : CVE-2026-47099

CVE.ORG link : CVE-2026-47099

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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