Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. Prior to 5.9.2, devalue.parse does not reject out-of-bounds indices that are greater than or equal to values.length in src/parse.js. A specially crafted untrusted payload can make the parser alternate between array representations, producing quadratic work as the payload grows and causing denial of service in applications that parse untrusted devalue data. This issue is fixed in version 5.9.2.
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Affected Vendors & Products
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History
Fri, 18 Sep 2026 23:45:00 +0000
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Svelte
Svelte devalue |
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| Vendors & Products |
Svelte
Svelte devalue |
Thu, 17 Sep 2026 20:30:00 +0000
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ssvc
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Thu, 17 Sep 2026 12:15:00 +0000
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| Weaknesses | CWE-1285 | |
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threat_severity
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threat_severity
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Wed, 16 Sep 2026 18:45:00 +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. Prior to 5.9.2, devalue.parse does not reject out-of-bounds indices that are greater than or equal to values.length in src/parse.js. A specially crafted untrusted payload can make the parser alternate between array representations, producing quadratic work as the payload grows and causing denial of service in applications that parse untrusted devalue data. This issue is fixed in version 5.9.2. | |
| Title | Svelte devalue: DoS via malformed input | |
| Weaknesses | CWE-770 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-09-16T18:34:34.881Z
Updated: 2026-09-17T19:25:51.846Z
Reserved: 2026-08-26T16:26:08.967Z
Link: CVE-2026-81176
Updated: 2026-09-17T17:06:25.819Z
Status : Deferred
Published: 2026-09-16T19:17:43.437
Modified: 2026-09-30T17:51:56.193
Link: CVE-2026-81176