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Vulnerabilities

Vulnerability · CVE-2025-62381

sveltekit-superforms makes SvelteKit forms a pleasure to use.

Published Oct 15, 2025 · catalog updated Oct 15, 2025 · sveltekit-superforms makes SvelteKit forms

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-62381. EPSS is 0.73%. Act only if a listed version of sveltekit-superforms makes SvelteKit forms is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (sveltekit-superforms makes SvelteKit forms).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.73%
Remediation
Version ranges on file
Affected products
vendor ciscoheat sveltekit-superforms < 2.27.4

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor ciscoheat sveltekit-superforms < 2.27.4< 2.27.4

How to fix CVE-2025-62381

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-62381. EPSS is 0.73%. Act only if a listed version of sveltekit-superforms makes SvelteKit forms is installed.

Which versions are affected?

Compare what you have installed with ciscoheat sveltekit-superforms < 2.27.4 < 2.27.4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.73%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Cisco security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 15, 2025 · EUVD

    Detected

    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 o

  2. Oct 15, 2025 · EUVD

    Updated

    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 o

Sources

  • CVE.orgVulnerability recordCVE-2025-62381

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-62381

    30-day exploitation probability 0.73%

    first.org
  • EUVDVulnerability recordEUVD-2025-34681

    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,

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • EUVDOct 26, 2026
  • CVE.orgOct 23, 2026
  • FIRST EPSSOct 23, 2026