Description

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In devalue v5.6.3 and earlier, devalue.parse and devalue.unflatten were susceptible to prototype pollution via maliciously crafted payloads. Successful exploitation could lead to Denial of Service (DoS) or type confusion. This vulnerability is fixed in 5.6.4.

INFO

Published Date :

2026-03-11T17:47:40.016Z

Last Modified :

2026-03-12T13:51:34.208Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-30226 vulnerability.

Vendors Products
Svelte
  • Devalue
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-30226.

URL Resource
https://github.com/sveltejs/devalue/security/advisories/GHSA-cfw5-2vxh-hr84 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-30226 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-30226 cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Detailed values of each vector for above chart.
Attack Vector
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User Interaction
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Integrity Impact
Availability Impact