OpenCATS up to 0.9.6 lib/FileUtility.php unrestricted upload

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as critical has been found in OpenCATS up to 0.9.6. This affects an unknown part in the library lib/FileUtility.php. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-434. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.

The weakness was shared 12/15/2021 as b1af3bde1f68bec1c703ad66a3e390f15ed8ebe1. The advisory is shared at This vulnerability is uniquely identified as CVE-2021-41560 since 09/22/2021. The exploitability is told to be easy. It is possible to initiate the attack remotely. A authentication is necessary for exploitation. Technical details are known, but no exploit is available.

Applying the patch b1af3bde1f68bec1c703ad66a3e390f15ed8ebe1 is able to eliminate this problem. The bugfix is ready for download at



CPE 2.3infoedit

CPE 2.2infoedit


Youtube: Not available anymore


VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍



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


Class: Privilege escalation
CWE: CWE-434
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒


Threat Intelligenceinfoedit

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


Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: b1af3bde1f68bec1c703ad66a3e390f15ed8ebe1


09/22/2021 CVE assigned
12/15/2021 +84 days Advisory disclosed
12/15/2021 +0 days VulDB entry created
12/18/2021 +3 days VulDB last update


Advisory: b1af3bde1f68bec1c703ad66a3e390f15ed8ebe1
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2021-41560 (🔒)


Created: 12/15/2021 12:56 PM
Updated: 12/18/2021 07:42 AM
Changes: (2) advisory_confirm_url source_cve_nvd_summary
Complete: 🔍


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