Severity
6.9
Medium severity
Details
- CVSS score
- 6.9
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/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
- CWE ID
Overview
About vulnerability
Impact
When generating an ESTree from a value with a property named __proto__, valueToEstree would generate an object that specifies a prototype instead.
Example:
import { generate } from 'astring'
import { valueToEstree } from 'estree-util-value-to-estree'
const estree = valueToEstree({
['__proto__']: {}
})
const code = generate(estree)
console.log(code)
Output:
{
"__proto__": {}
}
Patches
This was fixed in version [3.3.3](https://github.com/remcohaszing/estree-util-value-to-estree/releases/tag/v3.3.3).
Workarounds
If you control the input, don’t specify a property named __proto__. If you don’t control the output, strip any properties named __proto__ before passing it to valueToEstree.
Details
- Affected product:
- estree-util-value-to-estree , remark-mdx-frontmatter , remix
- Affected packages:
- remix @ 2.17.0 (+48 more)