CVE-2021-43742
CMSimple 5.4 is vulnerable to Cross Site Scripting (XSS) via the file upload feature.
CMSimple 5.4 is vulnerable to Cross Site Scripting (XSS) via the file upload feature.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
CMSimple 5.4 is vulnerable to Cross Site Scripting (XSS) via the file upload feature.
- Record
CVE-2021-43742- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
CMSimple 5.4 is vulnerable to Cross Site Scripting (XSS) via the file upload feature.
- Record
CVE-2021-43742- Updated
- 2026-11-02
EUVDEUVD-2021-30649 No score
CMSimple 5.4 is vulnerable to Cross Site Scripting (XSS) via the file upload feature.
- Record
EUVD-2021-30649- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gmjx-v99c-7jj2
CMSimple 5.4 is vulnerable to Cross Site Scripting (XSS) via the file upload feature.
CMSimple 5.4 is vulnerable to Cross Site Scripting (XSS) via the file upload feature.
- Record
GHSA-gmjx-v99c-7jj2- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-43742 is a medium vulnerability (CVSS 5.4) in Cmsimple, published April 13, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.57%, the 47th percentile. No source names a fixed version.