VDB-364367 · CVE-2021-47981 · Exploit 50530

Opensolution Quick.CMS 6.7 sDescription cross site scripting

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 (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.3	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Opensolution Quick.CMS 6.7 and classified as problematic. This vulnerability affects unknown code. The manipulation of the argument sDescription leads to cross site scripting. This vulnerability is uniquely identified as CVE-2021-47981. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Opensolution Quick.CMS 6.7. This issue affects an unknown part. The manipulation of the argument sDescription with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. The summary by CVE is:

Quick.CMS 6.7 contains a cross-site scripting vulnerability in the sliders form that allows authenticated attackers to inject malicious scripts by submitting XSS payloads through the sDescription parameter. Attackers can craft CSRF forms targeting the admin.php?p=sliders-form endpoint to execute arbitrary JavaScript in victim browsers when the form is submitted.

The weakness was disclosed by Rahad Chowdhury as 50530. It is possible to read the advisory at exploit-db.com. The identification of this vulnerability is CVE-2021-47981 since 05/16/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The exploit is available at exploit-db.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2021-34836). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Content Management System

Vendor

Opensolution

Name

Quick.CMS

Version

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

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

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.5
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.4
CNA Vector (VulnCheck): 🔒

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/16/2026 Advisory disclosed
05/16/2026 +0 days CVE reserved
05/16/2026 +0 days VulDB entry created
05/17/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: 50530
Researcher: Rahad Chowdhury
Status: Not defined

CVE: CVE-2021-47981 (🔒)
GCVE (CVE): GCVE-0-2021-47981
GCVE (VulDB): GCVE-100-364367
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/16/2026 18:15
Updated: 05/17/2026 02:06
Changes: 05/16/2026 18:15 (80), 05/17/2026 02:06 (1)
Complete: 🔍
Cache ID: 216::103