CVE-2025-57820 (GCVE-0-2025-57820)
Vulnerability from cvelistv5
Published
2025-08-26 22:33
Modified
2025-08-27 20:42
Severity ?
7.9 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Summary
Svelte devalue is a utility library. Prior to version 5.3.2, a string passed to devalue.parse could represent an object with a __proto__ property and devalue.parse does not check that an index is numeric. This could result in assigning prototypes to objects and properties, leading to prototype pollution. This issue has been fixed in version 5.3.2
References
security-advisories@github.comhttps://github.com/sveltejs/devalue/commit/0623a47c9555b639c03ff1baea82951b2d9d1132
security-advisories@github.comhttps://github.com/sveltejs/devalue/security/advisories/GHSA-vj54-72f3-p5jv
Impacted products
Vendor Product Version
sveltejs devalue Version: < 5.3.2
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