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CVE-2026-50277

7.5 · HIGH

dd-trace-cpp is the Datadog distributed tracing library for C++.

Published Sep 17, 2026CWE-770EPSS 0.79%

Overview

CVE-2026-50277 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

dd-trace-cpp is the Datadog distributed tracing library for C++. Prior to 2.1.0, dd-trace-cpp parses incoming W3C baggage headers without enforcing DD_TRACE_BAGGAGE_MAX_ITEMS or DD_TRACE_BAGGAGE_MAX_BYTES on the extraction path, even though those limits are enforced during injection. A remote unauthenticated attacker can send a header containing many comma-separated key-value pairs or one very large value, causing per-request hash-map allocation and unbounded CPU and memory consumption. Baggage extraction is enabled by default in most affected tracers unless baggage is removed from DD_TRACE_PROPAGATION_STYLE or DD_TRACE_PROPAGATION_STYLE_EXTRACT, so affected internet-facing services can be denied service. This issue is fixed in version 2.1.0.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/DataDog/dd-trace-cpp/commit/422dc91bb93e358e3977381275d311f3f926d666GitHubgithub.com/DataDog/dd-trace-cpp/pull/313GitHubgithub.com/DataDog/dd-trace-cpp/releases/tag/v2.1.0GitHubgithub.com/DataDog/dd-trace-cpp/security/advisories/GHSA-ch7h-phmx-rqwq

How CyberStrike helps

Frequently asked questions

What is CVE-2026-50277?

CVE-2026-50277 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-50277?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-50277?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-50277?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-50277 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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