libxml2, possibly before 2.5.0, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, aka the "billion laughs attack."
| Product | Vendor | Version |
|---|---|---|
| n/a | n/a | < 18e126e97c961f7a93823795c879d7c085fe5098 |