DiscuzX up to 3.4-20200818 install_function.php show_next_step uchidden cross site scripting

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 DiscuzX up to 3.4-20200818. It has been classified as problematic. Affected is the function show_next_step of the file upload/install/include/install_function.php. The manipulation of the argument uchidden with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity.

The weakness was disclosed 01/09/2020 as 4a9673624f46f7609486778ded9653733020c567. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2020-36828. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

By approaching the search of inurl:upload/install/include/install_function.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 3.4-20210119 eliminates this vulnerability. Applying the patch 4a9673624f46f7609486778ded9653733020c567 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. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

!187 修复 install.php中uchidden参数的XSS漏洞

The entries VDB-111584, VDB-111840, VDB-111841 and VDB-111842 are pretty similar.





CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍


VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 3.5
CNA Vector (VulDB): 🔍



VulDB Base Score: 🔍
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NVD Base Score: 🔍


Class: Cross site scripting
CWE: CWE-79 / CWE-74 / CWE-707

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: DiscuzX 3.4-20210119
Patch: 4a9673624f46f7609486778ded9653733020c567


01/09/2020 🔍
01/09/2020 +0 days 🔍
03/29/2024 +1541 days 🔍
03/29/2024 +0 days 🔍
05/07/2024 +39 days 🔍


Advisory: 4a9673624f46f7609486778ded9653733020c567
Status: Confirmed

CVE: CVE-2020-36828 (🔍)
See also: 🔍


Created: 03/29/2024 08:26 AM
Updated: 05/07/2024 06:19 PM
Changes: 03/29/2024 08:26 AM (59), 05/07/2024 06:11 PM (2), 05/07/2024 06:19 PM (17)
Complete: 🔍
Cache ID: 34:188:40


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