CVE-2019-3553: Facebook Thrift

High severity, CVSS 7.5. EPSS: 2.1% chance of exploitation in the next 30 days.

C++ Facebook Thrift servers would not error upon receiving messages declaring containers of sizes larger than the payload. As a result, malicious clients could send short messages which would result in a large memory allocation, potentially leading to denial of service. This issue affects Facebook Thrift prior to v2020.02.03.00.

Affected products

• Facebook Thrift: before 2020.02.03.00 (fixed in 2020.02.03.00)

Published 2020-03-10. Last modified 2026-06-17.