{"id":"CVE-2026-54788","title":"dd-trace-rs provides Datadog application performance monitoring for Rust","summary":"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…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-770"],"vendor":"datadog-opentelemetry","product":"datadog-opentelemetry","affected":["datadog-opentelemetry >= 0.1.0, < 0.3.3"],"patched":["datadog-opentelemetry 0.3.3"],"published":"2026-08-28","updated":"2026-09-09","sourceUpdated":"2026-09-09T21:09:13.080","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54788","references":[{"url":"https://github.com/DataDog/dd-trace-rs/commit/77c5d185c71d0ea8103da0e6cf4cd50677ffacd2","label":"security-advisories@github.com"},{"url":"https://github.com/DataDog/dd-trace-rs/pull/218","label":"security-advisories@github.com"},{"url":"https://github.com/DataDog/dd-trace-rs/releases/tag/datadog-opentelemetry-v0.3.3","label":"security-advisories@github.com"},{"url":"https://github.com/DataDog/dd-trace-rs/security/advisories/GHSA-gpwf-4h98-v82q","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-gpwf-4h98-v82q"}],"tags":["nvd","ghsa","rust"],"epss":0.00562,"epssPercentile":0.45543,"aliases":["GHSA-gpwf-4h98-v82q"],"ecosystem":"rust","ingestedAt":"2026-08-28T17:22:56.604Z","slug":"CVE-2026-54788","body":"## Overview\n\ndd-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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-54788)\n\nAffected packages:\n\n- `datadog-opentelemetry >= 0.1.0, < 0.3.3`\n\nPatched in:\n\n- `datadog-opentelemetry 0.3.3`\n\nSource: https://github.com/advisories/GHSA-gpwf-4h98-v82q","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}