CVE-2019-11937: Facebook Mcrouter

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

In Mcrouter prior to v0.41.0, a large struct input provided to the Carbon protocol reader could result in stack exhaustion and denial of service.

Affected products

• Facebook Mcrouter: before 0.41.0 (fixed in 0.41.0)

Published 2019-12-04. Last modified 2026-06-17.