How severe is CVE-2021-43505?

CVE-2021-43505 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-43505 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43505?

CVE-2021-43505 affects Simple Client Management System Project Simple Client Management System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43505?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-43505 published?

CVE-2021-43505 was published on 2022-03-31 and last updated on 2026-06-17.

CVE-2021-43505

CVE-2021-43505 is a medium-severity vulnerability in Simple Client Management System Project Simple Client Management System with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Simple Client Management System Project Simple Client Management System
Published: 2022-03-31
Last modified: 2026-06-17

Description

Multiple Cross Site Scripting (XSS) vulnerabilities exist in Ssourcecodester Simple Client Management System v1 via (1) Add new Client and (2) Add new invoice.

Frequently asked questions

What is CVE-2021-43505?: Multiple Cross Site Scripting (XSS) vulnerabilities exist in Ssourcecodester Simple Client Management System v1 via (1) Add new Client and (2) Add new invoice.
How severe is CVE-2021-43505?: CVE-2021-43505 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-43505 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43505?: CVE-2021-43505 affects Simple Client Management System Project Simple Client Management System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43505?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-43505 published?: CVE-2021-43505 was published on 2022-03-31 and last updated on 2026-06-17.

References

https://raw.githubusercontent.com/Sentinal920/Findings/main/Simple%20Client%20Management%20System/xss.txt

Affected products (1)

cpe:2.3:a:simple_client_management_system_project:simple_client_management_system:1.0:*:*:*:*:*:*:*

More vulnerabilities in Simple Client Management System Project Simple Client Management System

CVE-2022-29984 — Critical (CVSS 9.8): Simple Client Management System 1.0 is vulnerable to SQL Injection via /cms/admin/?page=client/view_client&id=.
CVE-2022-29983 — Critical (CVSS 9.8): Simple Client Management System 1.0 is vulnerable to SQL Injection via /cms/admin/?page=invoice/view_invoice&id=.
CVE-2022-29982 — Critical (CVSS 9.8): Simple Client Management System 1.0 is vulnerable to SQL Injection via /cms/admin/maintenance/manage_service.php?id=.
CVE-2022-29981 — Critical (CVSS 9.8): Simple Client Management System 1.0 is vulnerable to SQL Injection via /cms/classes/Users.php?f=delete.
CVE-2022-29980 — Critical (CVSS 9.8): Simple Client Management System 1.0 is vulnerable to SQL Injection via /cms/admin/?page=user/manage_user&id=.
CVE-2022-29979 — Critical (CVSS 9.8): Simple Client Management System 1.0 is vulnerable to SQL Injection via /cms/classes/Master.php?f=delete_designation.

All CVEs affecting Simple Client Management System Project Simple Client Management System →

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