PT-2026-22526 · Npm · Devalue

Published 2026-02-19 · Updated 2026-02-19

OSV

CVSS v4.0

1.7

Low

Base vector

AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U

Under certain circumstances, serializing sparse arrays using uneval or stringify could cause CPU and/or memory exhaustion. When this occurs on the server, it results in a DoS. This is extremely difficult to take advantage of in practice, as an attacker would have to manage to create a sparse array on the server — which is impossible in every mainstream wire format — and then that sparse array would have to be run through uneval or stringify.

Fix

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

GHSA-33HQ-FVWR-56PM

Affected Products

Devalue

References · 5

• https://osv.dev/vulnerability/GHSA-33hq-fvwr-56pm · Vendor Advisory
• https://github.com/sveltejs/devalue · Note
• https://github.com/sveltejs/devalue/commit/819f1ac7475ab37547645cfb09bf2f678a799cf0 · Note
• https://github.com/sveltejs/devalue/releases/tag/v5.6.3 · Note
• https://github.com/sveltejs/devalue/security/advisories/GHSA-33hq-fvwr-56pm · Note