{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-116588",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-26T15:03:39.036Z",
        "datePublished": "2026-10-26T21:22:46.130Z",
        "dateUpdated": "2026-10-26T21:22:46.130Z"
    },
    "containers": {
        "cna": {
            "title": "Datadog dd-trace-py: ReDOS in URL query string obfuscation",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1333",
                            "lang": "en",
                            "description": "CWE-1333: Inefficient Regular Expression Complexity",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.7,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/DataDog/dd-trace-py/security/advisories/GHSA-3633-r77q-h3v3",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/DataDog/dd-trace-py/security/advisories/GHSA-3633-r77q-h3v3"
                },
                {
                    "name": "https://github.com/DataDog/dd-trace-py/pull/20857",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/DataDog/dd-trace-py/pull/20857"
                },
                {
                    "name": "https://github.com/DataDog/dd-trace-py/pull/20862",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/DataDog/dd-trace-py/pull/20862"
                },
                {
                    "name": "https://github.com/DataDog/dd-trace-py/pull/20880",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/DataDog/dd-trace-py/pull/20880"
                },
                {
                    "name": "https://github.com/DataDog/dd-trace-py/commit/63ddc3cb07d8813ded7a8b3ab5b8d0f5470e4bfd",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/DataDog/dd-trace-py/commit/63ddc3cb07d8813ded7a8b3ab5b8d0f5470e4bfd"
                },
                {
                    "name": "https://github.com/DataDog/dd-trace-py/commit/83ea39845dd95bfb9b8e247c62b3d22fc5dce1ce",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/DataDog/dd-trace-py/commit/83ea39845dd95bfb9b8e247c62b3d22fc5dce1ce"
                },
                {
                    "name": "https://github.com/DataDog/dd-trace-py/commit/a6d73607ea45ecd67152630f64b0945556972ed8",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/DataDog/dd-trace-py/commit/a6d73607ea45ecd67152630f64b0945556972ed8"
                },
                {
                    "name": "https://github.com/DataDog/dd-trace-py/releases/tag/v3.19.9",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/DataDog/dd-trace-py/releases/tag/v3.19.9"
                },
                {
                    "name": "https://github.com/DataDog/dd-trace-py/releases/tag/v4.15.6",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/DataDog/dd-trace-py/releases/tag/v4.15.6"
                }
            ],
            "affected": [
                {
                    "vendor": "DataDog",
                    "product": "dd-trace-py",
                    "versions": [
                        {
                            "version": ">= 1.5.0, < 3.19.9",
                            "status": "affected"
                        },
                        {
                            "version": ">= 4.0.0, < 4.15.6",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-26T21:22:46.130Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Datadog dd-trace-py is the Datadog Python APM client. From 1.5.0 until 3.19.9 and 4.15.6, the default query-string obfuscation regular expression can exhibit excessive backtracking while synchronously processing attacker-controlled URL query strings for HTTP span metadata. A remote attacker can cause prolonged CPU consumption, request latency, and service unavailability in affected HTTP tracing integrations that include query strings in URL span tags. The vulnerable processing is enabled by default for those integrations. This issue is fixed in versions 3.19.9 and 4.15.6."
                }
            ],
            "source": {
                "advisory": "GHSA-3633-r77q-h3v3",
                "discovery": "UNKNOWN"
            }
        }
    }
}