{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43914",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-05-04T16:11:33.086Z",
        "datePublished": "2026-05-11T22:03:58.456Z",
        "dateUpdated": "2026-05-12T12:51:49.183Z"
    },
    "containers": {
        "cna": {
            "title": "Vaultwarden: Brute-force protection bypass vulnerability",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-307",
                            "lang": "en",
                            "description": "CWE-307: Improper Restriction of Excessive Authentication Attempts",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "LOW",
                        "baseScore": 7.3,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-c5rv-q295-7w4g",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-c5rv-q295-7w4g"
                },
                {
                    "name": "https://github.com/dani-garcia/vaultwarden/pull/6867",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/dani-garcia/vaultwarden/pull/6867"
                },
                {
                    "name": "https://github.com/dani-garcia/vaultwarden/releases/tag/1.35.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/dani-garcia/vaultwarden/releases/tag/1.35.4"
                }
            ],
            "affected": [
                {
                    "vendor": "dani-garcia",
                    "product": "vaultwarden",
                    "versions": [
                        {
                            "version": "< 1.35.4",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-05-11T22:03:58.456Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.35.4, there is a security vulnerability in Vaultwarden that allows bypassing the login brute-force protection if email 2fa is enabled. If email 2fa is enabled, the unprotected 2fa-function send_email_login (email.rs, api endpoint /api/two-factor/send-email-login) also acts as an oracle determining whether a username-password combination is correct. An attacker can abuse that endpoint to brute-force passwords without rate-limiting. This works even for users who don't have email 2fa configured. This vulnerability is fixed in 1.35.4."
                }
            ],
            "source": {
                "advisory": "GHSA-c5rv-q295-7w4g",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-c5rv-q295-7w4g",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-05-12T12:51:45.245041Z",
                                "id": "CVE-2026-43914",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "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": "2026-05-12T12:51:49.183Z"
                }
            }
        ]
    }
}