MEDIUM 5.3 NVD
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, devalue.parse does
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.
References
- https://github.com/sveltejs/devalue/commit/8b2a4562c446d7c36d9d629778079a5fae4243e1
- https://github.com/sveltejs/devalue/releases/tag/v5.9.2
- https://github.com/sveltejs/devalue/security/advisories/GHSA-9rgm-9g3h-6x36
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-09-16 via NVD.
vulnfeed aggregates 14597 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.