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CVE-2026-22775 PUBLISHED CVSS 7.5 HIGH

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. From 5.1.0 to 5.6.1, certain inputs can cause devalue.parse to consume excessive CPU time and/or memory, potentially leading to denial of service in systems that parse input from untrusted sources. This affects applications using devalue.parse on externally-supplied data. The root cause is the ArrayBuffer hydration expecting base64 encoded strings as input, but not checking the assumption before decoding the input. This vulnerability is fixed in 5.6.2.

EPSS 0.02% · 5.0th percentile

Risk Scores

CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.02%
5.0th percentile

Affected Products

VendorProductVersions
sveltedevalue5.1.0
sveltejsdevalue>= 5.1.0, < 5.6.2
npmdevalue5.1.0

Timeline

References

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