sveltejs/devalue · Security
devalue has prototype pollution in devalue.parse and devalue.unflatten
- GHSA ID
- GHSA-cfw5-2vxh-hr84
- CVE ID
- CVE-2026-30226
- Severity
- medium
- Published
- Updated
- CVSS v4
- 6.3 · CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
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.
CWEs
- CWE-1321 · Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')