{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.1.0"
              },
              {
                "fixed": "0.3.3"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "23222698c5c904a85d3faee9779519ae6a9da9d2"
            },
            {
              "fixed": "77c5d185c71d0ea8103da0e6cf4cd50677ffacd2"
            },
            {
              "fixed": "7ee480b34b0ae9b0f66ee704d663b6555ec7a823"
            }
          ],
          "repo": "https://github.com/datadog/dd-trace-rs",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-gpwf-4h98-v82q"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54788.json"
  },
  "details": "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.",
  "id": "CVE-2026-54788",
  "modified": "2026-09-11T03:30:46.739709130Z",
  "published": "2026-08-28T16:33:49.032Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/DataDog/dd-trace-rs/releases/tag/datadog-opentelemetry-v0.3.3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54788.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/DataDog/dd-trace-rs/security/advisories/GHSA-gpwf-4h98-v82q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54788"
    },
    {
      "type": "FIX",
      "url": "https://github.com/DataDog/dd-trace-rs/commit/77c5d185c71d0ea8103da0e6cf4cd50677ffacd2"
    },
    {
      "type": "FIX",
      "url": "https://github.com/DataDog/dd-trace-rs/pull/218"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "dd-trace-rs: Unbounded W3C tracestate parsing may lead to DoS"
}