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CVE-2026-123563

Devalue before 5.9.3 Typed-Array Allocation Validation Bypass via parse

CVSS 4.0 8.7 HIGHCVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown
Original advisory

Historical advisory recorded 8 Nov 2026 03:06:35 UTC. Read the latest advisory.

cve-program · CVE-2026-123563

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-123563

Published

Devalue before 5.9.3 Typed-Array Allocation Validation Bypass via parse

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.

Source published
8 Nov 2026 01:38:03 UTC
Source modified
8 Nov 2026 01:38:03 UTC
Saved here
8 Nov 2026 03:06:35 UTC
Source terms
CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

ChangeIntel

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Sources read 14 Nov 23:34 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current

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