sveltekit-superforms makes SvelteKit forms a pleasure to use. sveltekit-superforms v2.27.3 and prior are susceptible to a prototype pollution vulnerability within the parseFormData function of formData.js. An attacker can inject string and array properties into Object.prototype, leading to denial of service, type confusion, and potential remote code execution in downstream applications that rely on polluted objects. This vulnerability is fixed in 2.27.4.
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Wed, 15 Oct 2025 20:15:00 +0000
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Wed, 15 Oct 2025 17:30:00 +0000
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Description | sveltekit-superforms makes SvelteKit forms a pleasure to use. sveltekit-superforms v2.27.3 and prior are susceptible to a prototype pollution vulnerability within the parseFormData function of formData.js. An attacker can inject string and array properties into Object.prototype, leading to denial of service, type confusion, and potential remote code execution in downstream applications that rely on polluted objects. This vulnerability is fixed in 2.27.4. | |
Title | sveltekit-superforms Prototype Pollution in `parseFormData` function of `formData.js` | |
Weaknesses | CWE-1321 | |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2025-10-15T17:12:47.357Z
Updated: 2025-10-15T19:50:48.901Z
Reserved: 2025-10-10T14:22:48.205Z
Link: CVE-2025-62381

Updated: 2025-10-15T19:50:39.595Z

Status : Awaiting Analysis
Published: 2025-10-15T18:15:40.230
Modified: 2025-10-16T15:28:59.610
Link: CVE-2025-62381

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