httparty before 0.21.0 is vulnerable to an assumed-immutable web parameter vulnerability. A remote and unauthenticated attacker can provide a crafted filename parameter during multipart/form-data uploads which could result in attacker controlled filenames being written.
https://vulncheck.com/advisories/vc-advisory-GHSA-5pq7-52mg-hr42
https://github.com/jnunemaker/httparty/security/advisories/GHSA-5pq7-52mg-hr42