What’s Vulnerable › Vulnerabilities

CVE-2026-50272: dd-trace: Improper parsing of W3C baggage headers may lead to DoS

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-17 · updated 2026-10-24
• Weakness: CWE-770

Description

dd-trace is the Datadog APM client for Node.js. Prior to 5.100.0, W3C baggage propagation in packages/dd-trace/src/baggage.js and packages/dd-trace/src/opentracing/propagation/text_map.js parsed incoming baggage HTTP headers without enforcing DD_TRACE_BAGGAGE_MAX_ITEMS or DD_TRACE_BAGGAGE_MAX_BYTES on extraction. A remote, unauthenticated attacker can send a request whose baggage header contains an arbitrarily large number of comma-separated key-value pairs, or a single very large value, causing unbounded CPU and memory consumption and enabling a remote denial of service against any HTTP service with baggage propagation enabled. This issue is fixed in version 5.100.0.

Affected products

• DataDog dd-trace-js: before 5.100.0

References

• https://github.com/DataDog/dd-trace-js/commit/a7d4c0da05f67cde05a99272b725a317c461d0e6
• https://github.com/DataDog/dd-trace-js/pull/8255
• https://github.com/DataDog/dd-trace-js/releases/tag/v5.100.0
• https://github.com/DataDog/dd-trace-js/security/advisories/GHSA-wxqq-gcq8-c443

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