Modoboa up to 2.8.x /api/v1/accounts authorization

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k1.24

Summaryinfo

A vulnerability classified as problematic has been found in Modoboa up to 2.8.x. The impacted element is an unknown function of the file /api/v1/accounts. Performing a manipulation results in authorization. This vulnerability is reported as CVE-2026-56780. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Modoboa up to 2.8.x. It has been classified as problematic. This affects some unknown processing of the file /api/v1/accounts. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Modoboa before 2.9.0 contains an insecure direct object reference vulnerability in the PUT /api/v1/accounts/{pk}/password/ endpoint that allows domain administrators to change any user's password. Attackers with domain admin privileges can bypass object-level access controls to reset superadmin passwords and achieve full account takeover.

The weakness was disclosed by George Chen. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-56780 since 06/23/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 2.9.0 eliminates this vulnerability. Applying the patch a1878c4920a6e47c3217c6ff1ed4a8753c202661 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-40155). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

License

Website

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: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (VulnCheck): 🔒

CVSSv2info

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

Exploitinginfo

Class: Authorization
CWE: CWE-639 / CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
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: Modoboa 2.9.0
Patch: a1878c4920a6e47c3217c6ff1ed4a8753c202661

Timelineinfo

06/23/2026 CVE reserved
06/29/2026 +6 days Advisory disclosed
06/29/2026 +0 days VulDB entry created
06/29/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Researcher: George Chen
Status: Confirmed

CVE: CVE-2026-56780 (🔒)
GCVE (CVE): GCVE-0-2026-56780
GCVE (VulDB): GCVE-100-374667
EUVD: 🔒

Entryinfo

Created: 06/29/2026 20:32
Updated: 06/29/2026 23:04
Changes: 06/29/2026 20:32 (77), 06/29/2026 23:04 (1)
Complete: 🔍
Cache ID: 216::103

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

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