CVE-2025-62381highCWE-1321

CVE-2025-62381: high-severity vulnerability in ciscoheat sveltekit-superforms

sveltekit-superforms Prototype Pollution in `parseFormData` function of `formData.js`

Published

Follow this CVE+ Monitor sveltekit-superforms+ Monitor sveltekit-superforms

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.3epss 0.7%
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.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:L/SI:L/SA:L
Affected products
ciscoheat · sveltekit-superforms