medium · CVSS v3 4.4 · CVSS v4 2.1

CVE-2026-123568

Sveltejs devalue before 5.6.3 contains a prototype pollution vulnerability that allows attackers to alter object prototy…

Description

Sveltejs devalue before 5.6.3 contains a prototype pollution vulnerability that allows attackers to alter object prototypes by supplying untrusted data to uneval. When the generated code is later evaluated, it creates objects with polluted prototypes, producing output data whose shape differs from the original input.

Scores

Severity
medium
CVSS v2
3.2
CVSS v3
4.4
CVSS v4
2.1
EPSS
—

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