Prototype pollution in highcharts - #VU152790
Published: September 29, 2026
Vulnerability identifier: #VU152790
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-1321
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to modify object prototype properties and cause a denial of service.
The vulnerability exists due to improperly controlled modification of object prototype attributes in series column construction when building series columns from attacker-controlled point objects. A remote user can supply crafted point objects containing __proto__ or constructor keys to modify object prototype properties and cause a denial of service.
Injected integer-keyed properties persist after the chart has been built.
Affected software
highcharts
Remediation
Install security update from vendor's website.
highcharts - update to 13.1.0