~ / search / GHSA-xh3c-6gcq-g4rv

GHSA-xh3c-6gcq-g4rv

multiparty vulnerable to Denial of Service via Uncaught Exception in filename* parameter parsing

Source: GitHub Advisory Database (reviewed) High CVE-2026-8162

Packages

EcosystemPackageAffectedFixed in
npm multiparty < 4.3.0 4.3.0

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact [email protected] and lower versions are vulnerable to denial of service via uncaught exception. By sending a `multipart/form-data` request with a `Content-Disposition: filename*=utf-8''` header containing a malformed percent-encoding (e.g., `%FF`, `%GG`), the parser invokes `decodeURI` on the value without try/catch. The resulting `URIError` propagates as an uncaught exception and crashes the process. Any service accepting multipart uploads via multiparty is affected. ### Patches Users should upgrade to [email protected] or higher. ### Workarounds None.

References

External links from the advisory. They lead to third-party sites.