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Advisories

Sveltejs devalue before 5.6.3 Prototype Pollution via uneval Output

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Severity
low
Date
Affecting

  • devalue >= 0, < 5.6.3

CWE
  • CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CVSS
2.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Credit
elliott-with-the-longest-name-on-github
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.

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