PT-2026-41133 · Npm · Devalue

Published 2026-05-14 · Updated 2026-05-15 · CVE-2026-42570

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions devalue (affected versions not specified)

Description The devalue.parse function may allocate excessive memory when deserializing sparse arrays due to specific behaviors in some JavaScript engines. This can lead to high memory consumption.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2026-42570

GHSA-77VG-94RM-HX3P

Affected Products

Devalue

References · 6

• https://osv.dev/vulnerability/GHSA-77vg-94rm-hx3p · Vendor Advisory
• https://github.com/sveltejs/devalue · Note
• https://github.com/sveltejs/devalue/security/advisories/GHSA-77vg-94rm-hx3p · Note
• https://github.com/sveltejs/devalue/commit/206ca6712fbc380a4571c59de9ab04b91110792d · Note
• https://github.com/sveltejs/devalue/releases/tag/v5.8.1 · Note
• https://twitter.com/undiluted7027/status/2055399445496533403 · Twitter Post