CVE Explorer

CVE-2025-62381

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.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:df928cf5665c3243645173c2dfb5ff6c05c3fc16bec6c55cec021e5430e695fe

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"sveltekit-superforms","vendor":"ciscoheat","versions":[{"status":"affected","version":"< 2.27.4"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:4997cacc178d5ef5464b5749f60d80d6de0e5d436dbf8de3b6ffde47f5569a8d · sha256:4c032376097ed80a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.3,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"LOW","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:4997cacc178d5ef5464b5749f60d80d6de0e5d436dbf8de3b6ffde47f5569a8d · sha256:4c032376097ed80a… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-1321","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:4997cacc178d5ef5464b5749f60d80d6de0e5d436dbf8de3b6ffde47f5569a8d · sha256:4c032376097ed80a… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/ciscoheat/sveltekit-superforms/commit/4a1310dd1a94176bb22036662c530dad48059ca4","tags":["x_refsource_MISC"],"url":"https://github.com/ciscoheat/sveltekit-superforms/commit/4a1310dd1a94176bb22036662c530dad48059ca4"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4997cacc178d5ef5464b5749f60d80d6de0e5d436dbf8de3b6ffde47f5569a8d · sha256:4c032376097ed80a… · /containers/cna/references/1

{"name":"https://github.com/ciscoheat/sveltekit-superforms/security/advisories/GHSA-hwmc-4c8j-xxj7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/ciscoheat/sveltekit-superforms/security/advisories/GHSA-hwmc-4c8j-xxj7"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4997cacc178d5ef5464b5749f60d80d6de0e5d436dbf8de3b6ffde47f5569a8d · sha256:4c032376097ed80a… · /containers/cna/references/0

{"tags":["exploit"],"url":"https://github.com/ciscoheat/sveltekit-superforms/security/advisories/GHSA-hwmc-4c8j-xxj7"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4997cacc178d5ef5464b5749f60d80d6de0e5d436dbf8de3b6ffde47f5569a8d · sha256:4c032376097ed80a… · /containers/adp/0/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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