Resource exhaustion in Datadog Dd-Trace-Rs
CVE-2026-54788
dd-trace-rs provides Datadog application performance monitoring for Rust. From 0.1.0 until 0.3.3, datadog-opentelemetry/src/propagation/tracecontext.rs parses the W3C tracestate header and collects every semicolon-separated key and value pair in the Datadog dd=... vendor entry into a HashMap without enforcing a pair count or entry size limit. Because tracecontext extraction is enabled by default, a remote unauthenticated attacker can send an arbitrarily large dd=... entry and force excessive CPU and memory consumption for each request, causing denial of service in an instrumented network service. This vulnerability is fixed in 0.3.3.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Datadog Dd-trace-rs — versions >= 0.1.0, < 0.3.3
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-54788?
- CVE-2026-54788 is a high-severity vulnerability in Datadog Dd-Trace-Rs, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-08-28.
- How severe is CVE-2026-54788?
- High severity. CVSS v3 base score is 7.5 out of 10.