libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libexpat | Libexpat_project | * | 2.5.0 (including) |