HumHub 0.20.1/1.0.0-beta.3 privileges management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in HumHub 0.20.1/1.0.0-beta.3. It has been classified as critical. This affects an unknown functionality. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 03/17/2017 by Tim Coen with Curesec Research Team as HumHub 0.20.1 / 1.0.0-beta.3: Code Execution as confirmed mailinglist post (Full-Disclosure). The advisory is shared at This vulnerability is uniquely identified as CVE-2017-20028. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 1.0.0 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.




CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
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NVD Base Score: 9.8
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CNA Base Score: 5.6
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Class: Privileges management
CWE: CWE-269 / CWE-266

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Threat Intelligenceinfo

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Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: HumHub 1.0.0


03/27/2016 🔍
10/01/2016 +188 days 🔍
12/01/2016 +61 days 🔍
03/17/2017 +106 days 🔍
03/28/2017 +11 days 🔍
06/05/2022 +1894 days 🔍
11/22/2022 +170 days 🔍


Advisory: HumHub 0.20.1 / 1.0.0-beta.3: Code Execution
Researcher: Tim Coen
Organization: Curesec Research Team
Status: Confirmed

CVE: CVE-2017-20028 (🔍)


Created: 03/28/2017 05:44 PM
Updated: 11/22/2022 01:13 PM
Changes: 03/28/2017 05:44 PM (51), 08/23/2020 09:58 AM (1), 06/05/2022 09:41 AM (3), 11/22/2022 01:06 PM (3), 11/22/2022 01:13 PM (28)
Complete: 🔍
Cache ID: 44:298:40


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