HIGH 8.7 NVD
CVE-2026-123569
The devalue package for npm before 5.6.3 can consume excessive CPU and memory when serializing sparse arrays with uneval or stringify. An attacker who manages t
The devalue package for npm before 5.6.3 can consume excessive CPU and memory when serializing sparse arrays with uneval or stringify. An attacker who manages to get a sparse array created on the server, which mainstream wire formats do not allow, and serialized there can cause a denial of service.
References
- https://github.com/sveltejs/devalue/security/advisories/GHSA-33hq-fvwr-56pm
- https://www.vulncheck.com/advisories/devalue-before-5.6.3-denial-of-service-via-sparse-arr
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-11-08 via NVD.
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