CVE-2026-123566

7.5 HIGHpublic exploit available

Published 2026-11-08 · Updated 2026-11-09

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

NVD description

Sveltejs devalue before 5.9.3 contains a denial of service vulnerability that allows attackers to cause CPU amplification by supplying sparse arrays to uneval. Attackers who influence sparse values passed to uneval can force synchronous work proportional to the declared array length, blocking the event loop.

CVSS vector

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

Weaknesses

CWE-400

Public exploit & PoC references

https://github.com/sveltejs/devalue/security/advisories/GHSA-hx4r-w6wj-j8fg

All references

https://github.com/sveltejs/devalue/security/advisories/GHSA-hx4r-w6wj-j8fg
https://www.vulncheck.com/advisories/devalue-before-5.9.3-cpu-amplification-denial-of-service-via-uneval

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

Related CVEs

HIGHCVE-2025-52290
HIGHCVE-2026-100137
HIGHCVE-2026-100138
HIGHCVE-2026-100139
HIGHCVE-2026-100242PoC
MEDIUMCVE-2026-100350PoC
MEDIUMCVE-2026-100527PoC
LOWCVE-2026-100542PoC

Related by shared AI tags and CWE weakness class. Browse the full archive.