CVE-2026-12644 – ts-deepmerge Uncaught Exception

CVE ID :CVE-2026-12644

Published : June 19, 2026, 5 a.m. | 2 hours, 43 minutes ago

Description :Versions of the package ts-deepmerge before 8.0.0 are vulnerable to Uncaught Exception due to the improper handling of built-in Object.prototype methods (such as toString, valueOf). When user-controlled input contains these keys with non-function values, the resulting merged object becomes broken — any string context operation throws a TypeError, crashing the application.

Severity: 0.0 | NA

Visit the link for more details, such as CVSS details, affected products, timeline, and more…