Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. From version 5.6.3 to before version 5.8.1, devalue.parse could, due to quirks in some JavaScript engines, be convinced to allocate much more memory than was needed when deserializing sparse arrays, leading to excessive memory consumption. This issue has been patched in version 5.8.1.
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Affected Vendors & Products
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History
Tue, 09 Jun 2026 20:15:00 +0000
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Svelte
Svelte devalue |
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Svelte
Svelte devalue |
Tue, 09 Jun 2026 18:30:00 +0000
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ssvc
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Tue, 09 Jun 2026 16:30:00 +0000
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| Description | Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. From version 5.6.3 to before version 5.8.1, devalue.parse could, due to quirks in some JavaScript engines, be convinced to allocate much more memory than was needed when deserializing sparse arrays, leading to excessive memory consumption. This issue has been patched in version 5.8.1. | |
| Title | Svelte devalue: DoS via sparse array deserialization | |
| Weaknesses | CWE-770 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-06-09T16:12:26.377Z
Updated: 2026-06-09T18:06:56.030Z
Reserved: 2026-04-28T17:26:12.084Z
Link: CVE-2026-42570
Updated: 2026-06-09T18:06:42.643Z
Status : Undergoing Analysis
Published: 2026-06-09T17:17:07.253
Modified: 2026-06-09T19:32:29.743
Link: CVE-2026-42570
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