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, 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.
- Affected products
- Ts-Deepmerge
- Fix
- Available
- CVSS 4.0
- 6.9 MEDIUM
- CVSS 3.1
- 5.3 MEDIUM
- EPSS
- 0.5% (41th percentile)
- Weakness
- CWE-248
- NVD status
- Deferred
- Published
- 2026-06-19
CVE-2026-12644 at NVD
No indexed exploits for CVE-2026-12644 yet
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No exploit for CVE-2026-12644 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.