CVE-2025-32014

Impact

### Impact When generating an ESTree from a value with a property named `__proto__`, `valueToEstree` would generate an object that specifies a prototype instead. Example: ```js import { generate } from 'astring' import { valueToEstree } from 'estree-util-value-to-estree' const estree = valueToEstree({ ['__proto__']: {} }) const code = generate(estree) console.log(code) ``` Output: ```js { "__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`.

Affected packages

Weakness classification

References

• NVD record
• CVE.org record
• GitHub advisory
• https://github.com/remcohaszing/estree-util-value-to-estree/commit/d0c394fbc64bc55937ffe4e162b81f15ba506e55
• https://github.com/remcohaszing/estree-util-value-to-estree/security/advisories/GHSA-f7f6-9jq7-3rqj
• https://github.com/advisories/GHSA-f7f6-9jq7-3rqj
• https://nvd.nist.gov/vuln/detail/CVE-2025-32014