Vulnerability library
Security checkMarch 12, 2026

devalue has prototype pollution in devalue.parse and devalue.unflatten

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Medium severitynpmdevalue

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Description

In devalue v5.6.3, devalue.parse and devalue.unflatten were susceptible to prototype pollution via maliciously crafted payloads. Successful exploitation could lead to Denial of Service (DoS) or type confusion.

Recommendation

Update the devalue package to the latest compatible version. Followings are version details:

  • Affected version(s): < 5.6.4
  • Patched version(s): 5.6.4

References

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Related Issues

See something that needs correcting? Let us knowUpdated March 12, 2026