CVE-2026-12644
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, value…
Published: 2026-06-19 · CVSS: 6.9 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7