CVE-2026-43914

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Source

https://cve.org/CVERecord?id=CVE-2026-43914

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43914.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-43914

Aliases

GHSA-c5rv-q295-7w4g

Published

2026-05-11T22:03:58Z

Modified

2026-10-20T11:59:51Z

Severity

7.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVSS Calculator

Summary

Vaultwarden: Brute-force protection bypass vulnerability

Details

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.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-307"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43914.json"
}

References

Affected packages

Git / github.com/dani-garcia/vaultwarden

Affected ranges

Type

GIT

Repo

https://github.com/dani-garcia/vaultwarden

Events

Introduced

Fixed

c555f7d1980c8ab3ac8d64b0297e47c621590368

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "1.35.4"
        },
        {
            "cpe":  "cpe:2.3:a:dani-garcia:vaultwarden:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.35.4"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "original_tag":  "1.35.4",
            "range":  [
                {
                    "fixed":  "c555f7d1980c8ab3ac8d64b0297e47c621590368"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

0.*

0.10.0

0.11.0

0.12.0

0.13.0

1.*

1.0.0

1.1.0

1.10.0

1.11.0

1.12.0

1.13.0

1.13.1

1.14

1.14.1

1.14.2

1.15.0

1.15.1

1.16.0

1.16.1

1.16.2

1.16.3

1.17.0

1.18.0

1.19.0

1.2.0

1.20.0

1.21.0

1.22.0

1.22.1

1.22.2

1.23.0

1.23.1

1.24.0

1.25.0

1.25.1

1.25.2

1.26.0

1.27.0

1.28.0

1.28.1

1.29.0

1.29.1

1.29.2

1.3.0

1.30.0

1.30.1

1.30.2

1.30.3

1.30.4

1.30.5

1.31.0

1.32.0

1.32.1

1.32.2

1.32.3

1.32.4

1.32.5

1.32.6

1.32.7

1.33.0

1.33.1

1.33.2

1.34.0

1.34.1

1.34.2

1.34.3

1.35.0

1.35.1

1.35.2

1.35.3

1.4.0

1.5.0

1.6.0

1.6.1

1.7.0

1.8.0

1.9.0

1.9.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43914.json"