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.
Metrics
Affected Vendors & Products
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References
History
Fri, 19 Jun 2026 07:45:00 +0000
| Type | Values Removed | Values Added |
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| Title | Uncaught Exception in ts-deepmerge from Improper Handling of Object.prototype Methods |
Fri, 19 Jun 2026 06:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Weaknesses | CWE-248 | |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: snyk
Published:
Updated: 2026-06-19T05:00:00.666Z
Reserved: 2026-06-18T18:00:17.870Z
Link: CVE-2026-12644
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
Updated: 2026-06-19T07:30:16Z