{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-33129",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-03-17T20:35:49.927Z",
        "datePublished": "2026-03-20T09:41:21.933Z",
        "dateUpdated": "2026-03-20T19:33:49.871Z"
    },
    "containers": {
        "cna": {
            "title": "h3 has an observable timing discrepancy in basic auth utils",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-208",
                            "lang": "en",
                            "description": "CWE-208: Observable Timing Discrepancy",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 5.9,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/h3js/h3/security/advisories/GHSA-26f5-8h2x-34xh",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/h3js/h3/security/advisories/GHSA-26f5-8h2x-34xh"
                },
                {
                    "name": "https://github.com/h3js/h3/pull/1283",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/h3js/h3/pull/1283"
                },
                {
                    "name": "https://github.com/h3js/h3/releases/tag/v2.0.1-rc.9",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/h3js/h3/releases/tag/v2.0.1-rc.9"
                }
            ],
            "affected": [
                {
                    "vendor": "h3js",
                    "product": "h3",
                    "versions": [
                        {
                            "version": ">= 2.0.1-beta.0, < 2.0.1-rc.9",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-03-20T09:41:21.933Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "H3 is a minimal H(TTP) framework. Versions 2.0.1-beta.0 through 2.0.0-rc.8 contain a Timing Side-Channel vulnerability in the requireBasicAuth function due to the use of unsafe string comparison (!==). This allows an attacker to deduce the valid password character-by-character by measuring the server's response time, effectively bypassing password complexity protections. This issue is fixed in version 2.0.1-rc.9."
                }
            ],
            "source": {
                "advisory": "GHSA-26f5-8h2x-34xh",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-03-20T19:33:14.795855Z",
                                "id": "CVE-2026-33129",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "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": "2026-03-20T19:33:49.871Z"
                }
            }
        ]
    }
}