{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-63446",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-16T19:35:57.767Z",
        "datePublished": "2026-09-18T20:22:15.562Z",
        "dateUpdated": "2026-09-21T16:20:22.712Z"
    },
    "containers": {
        "cna": {
            "title": "Suricata app-layer: passed flows can retain transactions, causing resource exhaustion",
            "problemTypes": [
                {
                    "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": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/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-gjwr-75gq-877m",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/OISF/suricata/security/advisories/GHSA-gjwr-75gq-877m"
                },
                {
                    "name": "https://github.com/OISF/suricata/pull/15726",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OISF/suricata/pull/15726"
                },
                {
                    "name": "https://github.com/OISF/suricata/commit/006e21c1ccc38c1c815e7945d54b4638cc5f0de8",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OISF/suricata/commit/006e21c1ccc38c1c815e7945d54b4638cc5f0de8"
                },
                {
                    "name": "https://github.com/OISF/suricata/commit/60a83c62a1dfdfb589b2bad27fb7fc339fc964b7",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/OISF/suricata/commit/60a83c62a1dfdfb589b2bad27fb7fc339fc964b7"
                },
                {
                    "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/8628",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://redmine.openinfosecfoundation.org/issues/8628"
                }
            ],
            "affected": [
                {
                    "vendor": "OISF",
                    "product": "suricata",
                    "versions": [
                        {
                            "version": ">= 8.0.0, < 8.0.6",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-18T20:22:15.562Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, AppLayerParserSetTransactionInspectId() in src/app-layer-parser.c uses an inverted guard and marks only already-inspected transactions as inspected. On flows passed by a pass rule or pass-the-flow exception policy, detection is skipped, so completed transactions remain unmarked, are never freed, and are repeatedly rescanned. The per-flow list can grow without bound with quadratic cleanup cost, causing CPU and memory exhaustion. This issue is fixed in version 8.0.6."
                }
            ],
            "source": {
                "advisory": "GHSA-gjwr-75gq-877m",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-21T16:18:53.670399Z",
                                "id": "CVE-2026-63446",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "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": "2026-09-21T16:20:22.712Z"
                }
            }
        ]
    }
}