GHSA-vw5p-8cq8-m7mv
Devalue is vulnerable to denial of service due to memory exhaustion in devalue.parse
Packages
Details
As written in the advisory (Markdown source, shown as plain text).
## Summary
Certain inputs can cause `devalue.parse` to consume excessive CPU time and/or memory, potentially leading to denial of service in systems that parse input from untrusted sources. This affects applications using `devalue.parse` on externally-supplied data. The root cause is the typed array hydration expecting an `ArrayBuffer` as input, but not checking the assumption before creating the typed array.
## Details
The parser's typed array hydration logic does not properly validate input before processing. Specially crafted inputs can cause disproportionate memory allocation or CPU usage on the receiving system.
## Impact
This is a denial of service vulnerability affecting systems that use `devalue.parse` to handle data from potentially untrusted sources.
Affected systems should upgrade to patched versions immediately.
References
External links from the advisory. They lead to third-party sites.
- https://github.com/sveltejs/devalue/security/advisories/GHSA-vw5p-8cq8-m7mv
- https://nvd.nist.gov/vuln/detail/CVE-2026-22774
- https://github.com/sveltejs/devalue/commit/11755849fa0634ae294a15ec0aef2f43efcad7c4
- https://github.com/sveltejs/devalue/commit/e46afa64dd2b25aa35fb905ba5d20cea63aabbf7
- https://github.com/sveltejs/devalue
- https://github.com/sveltejs/devalue/releases/tag/v5.6.2