CVE-2021-34257
Unrestricted Upload of File with Dangerous Type in WPanel 4
Multiple Remote Code Execution (RCE) vulnerabilities exist in WPanel 4 4.3.1 and below via a malicious PHP file upload to (1) Dashboard's Avatar image, (2) Posts Folder image, (3) Pages Folder image and (4) Gallery Folder image.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Multiple Remote Code Execution (RCE) vulnerabilities exist in WPanel 4 4.3.1 and below via a malicious PHP file upload to (1) Dashboard's Avatar image, (2) Posts Folder image, (3) Pages Folder image and (4) Gallery Folder image.
- Record
CVE-2021-34257- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Weakness
- CWE-434
- Updated
- 2026-11-02
CVE List No score
Multiple Remote Code Execution (RCE) vulnerabilities exist in WPanel 4 4.3.1 and below via a malicious PHP file upload to (1) Dashboard's Avatar image, (2) Posts Folder image, (3) Pages Folder image and (4) Gallery Folder image.
- Record
CVE-2021-34257- Updated
- 2026-11-02
EUVDEUVD-2022-1839 No score
Multiple Remote Code Execution (RCE) vulnerabilities exist in WPanel 4 4.3.1 and below via a malicious PHP file upload to (1) Dashboard's Avatar image, (2) Posts Folder image, (3) Pages Folder image and (4) Gallery Folder image.
- Record
EUVD-2022-1839- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vhgr-gfx3-fg37
Unrestricted Upload of File with Dangerous Type in WPanel 4
Multiple Remote Code Execution (RCE) vulnerabilities exist in WPanel 4 4.3.1 and below via a malicious PHP file upload to (1) Dashboard's Avatar image, (2) Posts Folder image, (3) Pages Folder image and (4) Gallery Folder image.
- Record
GHSA-vhgr-gfx3-fg37- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-434
- Updated
- 2026-11-02
OSV
Multiple Remote Code Execution (RCE) vulnerabilities exist in WPanel 4 4.3.1 and below via a malicious PHP file upload to (1) Dashboard's Avatar image, (2) Posts Folder image, (3) Pages Folder image and (4) Gallery Folder image.
- Record
CVE-2021-34257- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-vhgr-gfx3-fg37
Unrestricted Upload of File with Dangerous Type in WPanel 4
Multiple Remote Code Execution (RCE) vulnerabilities exist in WPanel 4 4.3.1 and below via a malicious PHP file upload to (1) Dashboard's Avatar image, (2) Posts Folder image, (3) Pages Folder image and (4) Gallery Folder image.
- Record
GHSA-vhgr-gfx3-fg37- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-434
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
wpanel/wpanel4-cmsPackagist |
through 4.3.1 | None known |
wpanel/wpanel4-cmsPackagist |
through 4.3.1, plus listed versions 2.0.02.0.12.2.03.0.03.0.0-beta Show 15 moreShow less3.0.13.0.23.1.03.2.24.0.04.2.24.3.0v2.0.0-betav3.1.1v3.1.2v3.2.0v3.2.1v4.1.0v4.2.0v4.2.1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-34257 is a high vulnerability (CVSS 8.8) in Wpanel Cms Project Cms, published March 31, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.82%, the 78th percentile. No source names a fixed version.
