How severe is CVE-2019-11939?

CVE-2019-11939 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-11939 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-11939?

CVE-2019-11939 affects Facebook Thrift. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-11939?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-11939 published?

CVE-2019-11939 was published on 2020-03-18 and last updated on 2026-06-17.

CVE-2019-11939

CVE-2019-11939 is a high-severity vulnerability in Facebook Thrift with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Facebook Thrift
Published: 2020-03-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-11939?: 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.
How severe is CVE-2019-11939?: CVE-2019-11939 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-11939 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-11939?: CVE-2019-11939 affects Facebook Thrift. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-11939?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-11939 published?: CVE-2019-11939 was published on 2020-03-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:facebook:thrift:*:*:*:*:*:*:*:*

More vulnerabilities in Facebook Thrift

CVE-2021-24028 — Critical (CVSS 9.8): An invalid free in Thrift's table-based serialization can cause the application to crash or potentially result in code…
CVE-2019-3553 — High (CVSS 7.5): C++ Facebook Thrift servers would not error upon receiving messages declaring containers of sizes larger than the…
CVE-2019-11938 — High (CVSS 7.5): Java Facebook Thrift servers would not error upon receiving messages declaring containers of sizes larger than the…
CVE-2019-3565 — High (CVSS 7.5): Legacy C++ Facebook Thrift servers (using cpp instead of cpp2) would not error upon receiving messages with containers…
CVE-2019-3564 — High (CVSS 7.5): Go Facebook Thrift servers would not error upon receiving messages with containers of fields of unknown type. As a…
CVE-2019-3559 — High (CVSS 7.5): Java Facebook Thrift servers would not error upon receiving messages with containers of fields of unknown type. As a…

All CVEs affecting Facebook Thrift →

Other CWE-770 (Allocation of Resources Without Limits or Throttling) vulnerabilities

CVE-2026-31283 — Critical (CVSS 9.8): In Totara LMS v19.1.5 and before, the forgot password API does not implement rate limiting for the target email…
CVE-2020-37067 — Critical (CVSS 9.8): Filetto 1.0 FTP server contains a denial of service vulnerability in the FEAT command processing that allows attackers…
CVE-2021-47875 — Critical (CVSS 9.8): GeoGebra CAS Calculator 6.0.631.0 contains a denial of service vulnerability that allows attackers to crash the…
CVE-2025-11832 — Critical (CVSS 9.8): Allocation of Resources Without Limits or Throttling vulnerability in Azure Access Technology BLU-IC2, Azure Access…
CVE-2024-44241 — Critical (CVSS 9.8): The issue was addressed with improved bounds checks. This issue is fixed in iOS 18.1 and iPadOS 18.1, macOS Sequoia…
CVE-2022-3439 — Critical (CVSS 9.8): Allocation of Resources Without Limits or Throttling in GitHub repository ikus060/rdiffweb prior to 2.5.0.

Browse all CWE-770 (Allocation of Resources Without Limits or Throttling) vulnerabilities →