CVE-2026-123563

7.5 HIGHpublic exploit available

Published 2026-11-08 · Updated 2026-11-08

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

Devalue before 5.9.3 contains a validation bypass vulnerability that allows custom ArrayBuffer revivers to skip typed-array allocation checks in the parse function. Attackers can supply very small crafted input processed by a malformed ArrayBuffer reviver to allocate massive ArrayBuffers, causing memory exhaustion and denial of service.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-789

Public exploit & PoC references

https://github.com/sveltejs/devalue/security/advisories/GHSA-r9w8-h9r3-54w4

All references

https://github.com/sveltejs/devalue/security/advisories/GHSA-r9w8-h9r3-54w4
https://www.vulncheck.com/advisories/devalue-before-5.9.3-typed-array-allocation-validation-bypass-via-parse

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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