Mailerup up to 1.0.0 apps/accounts/views.py missing authentication

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k1.85

Summaryinfo

A vulnerability identified as critical has been detected in Mailerup up to 1.0.0. The affected element is an unknown function of the file apps/accounts/views.py. This manipulation causes missing authentication. This vulnerability is handled as CVE-2026-13164. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Mailerup up to 1.0.0. It has been declared as critical. Affected by this vulnerability is some unknown functionality of the file apps/accounts/views.py. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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

The weakness was released by Dario Rivas Quero, Cristian Fernandez Cornejo and Xoan M. Otero Jorge as 99eb6d4586134bf3f4422093fbf47d6794ef0ee5. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-13164 since 06/24/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.0.1 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing authentication
CWE: CWE-306 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Mailerup 1.0.1

Timelineinfo

06/24/2026 Advisory disclosed
06/24/2026 +0 days CVE reserved
06/24/2026 +0 days VulDB entry created
06/24/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: 99eb6d4586134bf3f4422093fbf47d6794ef0ee5
Researcher: Dario Rivas Quero, Cristian Fernandez Cornejo, Xoan M. Otero Jorge
Status: Confirmed

CVE: CVE-2026-13164 (🔒)
GCVE (CVE): GCVE-0-2026-13164
GCVE (VulDB): GCVE-100-373291

Entryinfo

Created: 06/24/2026 18:34
Changes: 06/24/2026 18:34 (68)
Complete: 🔍
Cache ID: 216::103

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