CVE-2026-13164

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Source

https://cve.org/CVERecord?id=CVE-2026-13164

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-13164.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-13164

Published

2026-06-24T15:37:17.398Z

Modified

2026-07-15T01:48:53.271396258Z

Severity

8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator

Summary

Unauthenticated self-registration in MailerUp allows access to stored email data

Details

Missing Authentication for Critical Function (CWE-306) in the RegisterView (apps/accounts/views.py), exposed at POST /api/auth/register/, in MailerUp <1.0.1 allows a remote, unauthenticated attacker to self-register a working account on instances where registration is intended to be restricted, because the endpoint applies the AllowAny permission with no email verification, CAPTCHA, or administrator approval. Any account created this way can read all email stored by the instance, resulting in full disclosure of stored messages to an arbitrary unauthenticated attacker

Database specific

{
    "cna_assigner": "Secur0",
    "cwe_ids": [
        "CWE-306"
    ],
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "fixed": "1.0.1"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "extracted_events": [
                {
                    "fixed": "1.0.1"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/13xxx/CVE-2026-13164.json"
}

References

Affected packages

Git / github.com/maalfer/mailerup

Affected ranges

Type

GIT

Repo

https://github.com/maalfer/mailerup

Events

Introduced

Fixed

99eb6d4586134bf3f4422093fbf47d6794ef0ee5

Database specific

{
    "source": "REFERENCES"
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-13164.json"