CVE Catalog

CVE-2025-62381

HighCVSS 8.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.55%

44th percentile - higher than 44% of all known CVEs

Summary

sveltekit-superforms v2.27.3 and prior are susceptible to a prototype pollution vulnerability in the parseFormData function. 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. Fixed in 2.27.4.

Risk Assessment

Applications using this library may be exposed to DoS, type confusion, or remote code execution, potentially leading to application takeover or data breaches.

Recommendation

Update sveltekit-superforms to version 2.27.4 or later. Check if applications rely on polluted objects.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS