What is CVE-2026-12644?

CVE-2026-12644 is a medium-severity vulnerability in Ts-deepmerge, classified under CWE-248. CVSS score: 5.3/10. Published 2026-06-19.

How severe is CVE-2026-12644?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Ts-deepmerge

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-f…

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

N/a Ts-deepmerge — versions 0

Weakness classification (CWE)

CWE-248

References

report@snyk.io
report@snyk.io
report@snyk.io

Frequently asked questions

What is CVE-2026-12644?: CVE-2026-12644 is a medium-severity vulnerability in Ts-deepmerge, classified under CWE-248. CVSS score: 5.3/10. Published 2026-06-19.
How severe is CVE-2026-12644?: Medium severity. CVSS v3 base score is 5.3 out of 10.