CVE-2026-81176
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,
CVSS
5.3
Medium
EPSS
0.5%
p41
KEV
—
Exploit Today
12
0-100
Published: Sep 16, 2026 · Last modified: Sep 16, 2026 · CWE-770
Not enough EPSS history yet.
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.