7.5

CVE-2026-42570

Svelte devalue: DoS via sparse array deserialization

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. From version 5.6.3 to before version 5.8.1, devalue.parse could, due to quirks in some JavaScript engines, be convinced to allocate much more memory than was needed when deserializing sparse arrays, leading to excessive memory consumption. This issue has been patched in version 5.8.1.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Svelte ≫ Devalue SwPlatformnode.js Version >= 5.6.3 < 5.8.1
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.39% 0.314
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-770 Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

https://github.com/sveltejs/devalue/commit/206ca6712fbc380a4571c59de9ab04b91110792d
Patch
https://github.com/sveltejs/devalue/releases/tag/v5.8.1
Product
Release Notes
https://bugzilla.redhat.com/show_bug.cgi?id=2487050
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42570.json
https://access.redhat.com/errata/RHSA-2026:37272
https://github.com/sveltejs/devalue/security/advisories/GHSA-77vg-94rm-hx3p
Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-42570