Description
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.
Recommendation
Update the devalue package to the latest compatible version. Followings are version details:
- Affected version(s): <= 5.6.2
- Patched version(s): 5.6.3
References
Related Issues
- @sveltejs/kit has memory amplification DoS vulnerability in Remote Functions binary form deserializer (application/x-sve - CVE-2026-22803
- devalue vulnerable to denial of service due to memory/CPU exhaustion in devalue.parse - CVE-2026-22775
- CPU exhaustion in SvelteKit remote form deserialization (experimental only) - Vulnerability
- Memory exhaustion in SvelteKit remote form deserialization (experimental only) - Vulnerability
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- Tags:
- npm
- devalue
Anything's wrong? Let us know Last updated on February 19, 2026