CVE-2025-57820
HIGH EPSS 26.3%
Published Aug 26, 202510mo ago · Modified Jun 17, 20262w ago
7.9 CVSS 4.0
Published Aug 26, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago
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
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
26.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-1321
References 2
- github.com https://github.com/sveltejs/devalue/commit/0623a47c9555b639c03ff1baea82951b2d9d1132
- github.com https://github.com/sveltejs/devalue/security/advisories/GHSA-vj54-72f3-p5jv
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.