CVE-2026-55733 | ueberauth guardian up to 2.4.0 AtomEncoding atom_encoding.ex String.to_atom Value allocation of resources

A vulnerability classified as problematic was found in ueberauth guardian up to 2.4.0. Affected by this vulnerability is the function String.to_atom of the file lib/guardian/permissions/atom_encoding.ex of the component AtomEncoding. The manipulation of the argument Value results in allocation of resources.

This vulnerability was named CVE-2026-55733. The attack may be performed from remote. There is no available exploit.

Upgrading the affected component is advised.