{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-63448",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-16T19:35:57.767Z",
        "datePublished": "2026-09-18T20:20:01.185Z",
        "dateUpdated": "2026-09-22T15:48:51.877Z"
    },
    "containers": {
        "cna": {
            "title": "Suricata smb: some SMB flows can cause resource exhaustion",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-400",
                            "lang": "en",
                            "description": "CWE-400: Uncontrolled Resource Consumption",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-401",
                            "lang": "en",
                            "description": "CWE-401: Missing Release of Memory after Effective Lifetime",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-407",
                            "lang": "en",
                            "description": "CWE-407: Inefficient Algorithmic Complexity",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 5.9,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/OISF/suricata/security/advisories/GHSA-hvvj-c8xx-9g35",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/OISF/suricata/security/advisories/GHSA-hvvj-c8xx-9g35"
                },
                {
                    "name": "https://github.com/OISF/suricata/commit/755d6c3061de4d7ba97f0ed31cdc17ab8cab4476",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OISF/suricata/commit/755d6c3061de4d7ba97f0ed31cdc17ab8cab4476"
                },
                {
                    "name": "https://github.com/OISF/suricata/commit/7ec9d72d28b9370712cf77a5b9d40d6b5db27cb4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OISF/suricata/commit/7ec9d72d28b9370712cf77a5b9d40d6b5db27cb4"
                },
                {
                    "name": "https://github.com/OISF/suricata/commit/88adab8bd3d62912941647ab65032d5ec75c893a",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OISF/suricata/commit/88adab8bd3d62912941647ab65032d5ec75c893a"
                },
                {
                    "name": "https://github.com/OISF/suricata/commit/9a54a043516e644bb7b9d34117a91977f950a281",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OISF/suricata/commit/9a54a043516e644bb7b9d34117a91977f950a281"
                },
                {
                    "name": "https://github.com/OISF/suricata/commit/bc39274a638d1cca2391cfa4891c8b6c255ff9ce",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OISF/suricata/commit/bc39274a638d1cca2391cfa4891c8b6c255ff9ce"
                },
                {
                    "name": "https://github.com/OISF/suricata/commit/c8f68b0e4f9e721dca1c9ed6e08597c6964c7ac3",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OISF/suricata/commit/c8f68b0e4f9e721dca1c9ed6e08597c6964c7ac3"
                },
                {
                    "name": "https://github.com/OISF/suricata/releases/tag/suricata-7.0.17",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OISF/suricata/releases/tag/suricata-7.0.17"
                },
                {
                    "name": "https://github.com/OISF/suricata/releases/tag/suricata-8.0.6",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OISF/suricata/releases/tag/suricata-8.0.6"
                },
                {
                    "name": "https://redmine.openinfosecfoundation.org/issues/8629",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://redmine.openinfosecfoundation.org/issues/8629"
                }
            ],
            "affected": [
                {
                    "vendor": "OISF",
                    "product": "suricata",
                    "versions": [
                        {
                            "version": ">= 8.0.0, < 8.0.6",
                            "status": "affected"
                        },
                        {
                            "version": "< 7.0.17",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-18T20:20:01.185Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, the SMB parser can retain force-completed transactions on flows where Suricata sees payload in only one direction, including async-oneside flows, because cleanup waits for inspection in the unseen direction. The transaction creation paths in rust/src/smb can exceed the intended SMB_MAX_TX bound, and cleanup repeatedly scans the growing list. Sustained one-directional SMB traffic can therefore cause unbounded per-flow state and CPU and memory exhaustion. This issue is fixed in versions 8.0.6 and 7.0.17."
                }
            ],
            "source": {
                "advisory": "GHSA-hvvj-c8xx-9g35",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-22T15:48:35.862458Z",
                                "id": "CVE-2026-63448",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-22T15:48:51.877Z"
                }
            }
        ]
    }
}