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5.3 Medium

CVE-2026-81176 Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for…

Description

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. Prior to 5.9.2, devalue.parse does not reject out-of-bounds indices that are greater than or equal to values.length in src/parse.js. A specially crafted untrusted payload can make the parser alternate between array representations, producing quadratic work as the payload grows and causing denial of service in applications that parse untrusted devalue data. This issue is fixed in version 5.9.2.

Affected products and versions

Product Affected versions Fixed in
devalue 5.9 earliest → < 5.9.2 5.9.2

Other CVEs of devalue

The 7 CVEs of devalue →
CVE-2026-92708 Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for… 7.5 High CVE-2026-42570 Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for… 7.5 High CVE-2026-30226 Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for… 6.3 Medium CVE-2026-22775 Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for… 7.5 High
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