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CVE PROGRAM SOURCE RECORD2.1 Low

CVE-2026-123568

Sveltejs devalue before 5.6.3 Prototype Pollution via uneval Output

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Status
Published
Published
Updated
Assigning organization
VulnCheck

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

sveltejs devalue

Default version status: unaffected

  • 0 to < 5.6.3affected
  • 5.6.3unaffected
pkg:npm/devalue

References