{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-78156",
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "state": "PUBLISHED",
        "assignerShortName": "VulDB",
        "dateReserved": "2026-08-23T11:34:31.832Z",
        "datePublished": "2026-08-23T23:45:09.676Z",
        "dateUpdated": "2026-08-23T23:45:09.676Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
                "shortName": "VulDB",
                "dateUpdated": "2026-08-23T23:45:09.676Z"
            },
            "title": "Open5GS S6a Authentication-Information-Request hss-s6a-path.c hss_ogs_diam_s6a_air_cb heap-based overflow",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "cweId": "CWE-122",
                            "lang": "en",
                            "description": "Heap-based Buffer Overflow"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "cweId": "CWE-119",
                            "lang": "en",
                            "description": "Memory Corruption"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "n/a",
                    "product": "Open5GS",
                    "versions": [
                        {
                            "version": "2.8.0",
                            "status": "affected"
                        }
                    ],
                    "cpes": [
                        "cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"
                    ],
                    "modules": [
                        "S6a Authentication-Information-Request Handler"
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A security vulnerability has been detected in Open5GS 2.8.0. Affected by this issue is the function hss_ogs_diam_s6a_air_cb of the file src/hss/hss-s6a-path.c of the component S6a Authentication-Information-Request Handler. Such manipulation of the argument Visited-PLMN-Id leads to heap-based buffer overflow. The attack may be performed from remote. The name of the patch is a9c82ee0b590d76a581b0580cb46b598984e2392. A patch should be applied to remediate this issue."
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "version": "4.0",
                        "baseScore": 5.3,
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P",
                        "baseSeverity": "MEDIUM"
                    }
                },
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "baseScore": 7.4,
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C",
                        "baseSeverity": "HIGH"
                    }
                },
                {
                    "cvssV3_0": {
                        "version": "3.0",
                        "baseScore": 7.4,
                        "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C",
                        "baseSeverity": "HIGH"
                    }
                },
                {
                    "cvssV2_0": {
                        "version": "2.0",
                        "baseScore": 6.5,
                        "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C"
                    }
                }
            ],
            "timeline": [
                {
                    "time": "2026-08-23T00:00:00.000Z",
                    "lang": "en",
                    "value": "Advisory disclosed"
                },
                {
                    "time": "2026-08-23T02:00:00.000Z",
                    "lang": "en",
                    "value": "VulDB entry created"
                },
                {
                    "time": "2026-08-23T13:39:47.000Z",
                    "lang": "en",
                    "value": "VulDB entry last update"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "WeiYi (VulDB User)",
                    "type": "reporter"
                }
            ],
            "references": [
                {
                    "url": "https://vuldb.com/vuln/394539",
                    "name": "VDB-394539 | Open5GS S6a Authentication-Information-Request hss-s6a-path.c hss_ogs_diam_s6a_air_cb heap-based overflow",
                    "tags": [
                        "vdb-entry",
                        "technical-description"
                    ]
                },
                {
                    "url": "https://vuldb.com/vuln/394539/cti",
                    "name": "VDB-394539 | CTI Indicators (IOB, IOC, IOA)",
                    "tags": [
                        "signature",
                        "permissions-required"
                    ]
                },
                {
                    "url": "https://vuldb.com/cve/CVE-2026-78156",
                    "name": "CVE-2026-78156 | CVE Analysis and Report",
                    "tags": [
                        "third-party-advisory"
                    ]
                },
                {
                    "url": "https://vuldb.com/submit/882951",
                    "name": "Submit #882951 | Open5GS 2.8.0 Heap Buffer Overflow",
                    "tags": [
                        "third-party-advisory"
                    ]
                },
                {
                    "url": "https://github.com/open5gs/open5gs/issues/4661",
                    "tags": [
                        "issue-tracking"
                    ]
                },
                {
                    "url": "https://github.com/open5gs/open5gs/commit/a9c82ee0b590d76a581b0580cb46b598984e2392",
                    "tags": [
                        "patch"
                    ]
                },
                {
                    "url": "https://github.com/open5gs/open5gs/",
                    "tags": [
                        "product"
                    ]
                }
            ],
            "tags": [
                "x_open-source"
            ],
            "x_generator": [
                "VulDB PVTS v202608"
            ]
        }
    }
}