CVE-2019-11939

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-03-18 · updated 2026-06-17
Weakness: CWE-770

Description

Golang 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 v2020.03.16.00.

Affected products

Facebook Thrift: before 2020.03.16.00 — fixed in 2020.03.16.00

How to fix

Upgrade to a fixed version: Facebook Thrift 2020.03.16.00. Check the vendor advisory for mitigations.

References

https://github.com/facebook/fbthrift/commit/483ed864d69f307e9e3b9dadec048216100c0757
https://www.facebook.com/security/advisories/cve-2019-11939
https://github.com/facebook/fbthrift/commit/483ed864d69f307e9e3b9dadec048216100c0757
https://www.facebook.com/security/advisories/cve-2019-11939

Get alerted when CVE-2019-11939 or the next vulnerability affects your stack