{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-26200",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-02-11T19:56:24.813Z",
        "datePublished": "2026-02-19T19:19:10.512Z",
        "dateUpdated": "2026-06-30T12:08:11.714Z"
    },
    "containers": {
        "cna": {
            "title": "HDF5 Affected by H5T__conv_struct_opt Heap Buffer Overflow",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-122",
                            "lang": "en",
                            "description": "CWE-122: Heap-based Buffer Overflow",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "LOCAL",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.8,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/HDFGroup/hdf5/security/advisories/GHSA-5p2m-j456-9mr2",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/HDFGroup/hdf5/security/advisories/GHSA-5p2m-j456-9mr2"
                }
            ],
            "affected": [
                {
                    "vendor": "HDFGroup",
                    "product": "hdf5",
                    "versions": [
                        {
                            "version": "< 1.14.4-2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-02-19T19:19:10.512Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "HDF5 is software for managing data. Prior to version 1.14.4-2, an attacker who can control an `h5` file parsed by HDF5 can trigger a write-based heap buffer overflow condition. This can lead to a denial-of-service condition, and potentially further issues such as remote code execution depending on the practical exploitability of the heap overflow against modern operating systems. Real-world exploitability of this issue in terms of remote-code execution is currently unknown. Version 1.14.4-2 fixes the issue."
                }
            ],
            "source": {
                "advisory": "GHSA-5p2m-j456-9mr2",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-02-19T21:16:38.054988Z",
                                "id": "CVE-2026-26200",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-02-19T21:23:04.319Z"
                }
            },
            {
                "affected": [
                    {
                        "cpes": [
                            "cpe:/a:redhat:enterprise_linux_ai:3"
                        ],
                        "defaultStatus": "affected",
                        "product": "Red Hat Enterprise Linux AI (RHEL AI) 3",
                        "vendor": "Red Hat"
                    }
                ],
                "datePublic": "2026-02-19T19:19:10.512Z",
                "descriptions": [
                    {
                        "lang": "en",
                        "value": "A flaw was found in HDF5, a software for managing data. An attacker who can control an `h5` file parsed by HDF5 can trigger a write-based heap buffer overflow. This can lead to a denial-of-service condition, and could potentially lead to further issues such as remote code execution, though its real-world exploitability for this is currently unknown."
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "content": {
                                "namespace": "https://access.redhat.com/security/updates/classification/",
                                "value": "Important"
                            },
                            "type": "Red Hat severity rating"
                        }
                    },
                    {
                        "cvssV3_1": {
                            "attackComplexity": "LOW",
                            "attackVector": "LOCAL",
                            "availabilityImpact": "HIGH",
                            "baseScore": 7.8,
                            "baseSeverity": "HIGH",
                            "confidentialityImpact": "HIGH",
                            "integrityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "scope": "UNCHANGED",
                            "userInteraction": "REQUIRED",
                            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                            "version": "3.1"
                        },
                        "format": "CVSS"
                    }
                ],
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "cweId": "CWE-131",
                                "description": "Incorrect Calculation of Buffer Size",
                                "lang": "en",
                                "type": "CWE"
                            }
                        ]
                    }
                ],
                "references": [
                    {
                        "tags": [
                            "vdb-entry",
                            "x_refsource_REDHAT"
                        ],
                        "url": "https://access.redhat.com/security/cve/CVE-2026-26200"
                    },
                    {
                        "name": "RHBZ#2441088",
                        "tags": [
                            "issue-tracking",
                            "x_refsource_REDHAT"
                        ],
                        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2441088"
                    },
                    {
                        "tags": [
                            "x_sadp-csaf-vex"
                        ],
                        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26200.json"
                    }
                ],
                "timeline": [
                    {
                        "lang": "en",
                        "time": "2026-02-19T20:05:33.115Z",
                        "value": "Reported to Red Hat."
                    },
                    {
                        "lang": "en",
                        "time": "2026-02-19T19:19:10.512Z",
                        "value": "Made public."
                    }
                ],
                "title": "hdf5: HDF5: Denial of Service due to heap buffer overflow when parsing a crafted h5 file",
                "workarounds": [
                    {
                        "lang": "en",
                        "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."
                    }
                ],
                "x_adpType": "supplier",
                "x_generator": {
                    "engine": "sadp-cli 1.0.0"
                },
                "providerMetadata": {
                    "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
                    "shortName": "redhat-SADP",
                    "dateUpdated": "2026-06-30T12:08:11.714Z"
                }
            }
        ]
    }
}