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VULNERABILITIES

CVE-2026-42570 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: redhat-SADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:37272 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:57590 redhat-SADP
https://access.redhat.com/security/cve/CVE-2026-42570 redhat-SADP
https://bugzilla.redhat.com/show_bug.cgi?id=2487050 redhat-SADP
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42570.json redhat-SADP

see all 8 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-770Allocation of Resources Without Limits or Throttlingredhat-SADP
CWE-770Allocation of Resources Without Limits or Throttling[email protected]

Affected Products

ProductVersions
svelte devalue
>= 5.6.3, < 5.8.1

CPE

  • cpe:2.3:a:svelte:devalue:*:*:*:*:*:node.js:*:*

Remediation

  • No remediation found in references.

Change History

10 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-42570
NVD Published Date:
Jun 9, 2026
NVD Last Modified:
Aug 24, 2026
Source:
[email protected]