CVE-2025-57820
Svelte devalue vulnerable to prototype pollution
- State
- Published
- Severity
- 7.9 High
- Published
- Aug 26, 2025
- Updated
- Aug 27, 2025
- Reserved
- Aug 20, 2025
Description
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
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 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 | GitHub_M |
Weaknesses
- CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Products
| Product | Versions |
|---|---|
devaluesveltejs |
|
References
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