GreenCMS up to 2.3 index.php?m=admin&c=custom&a=themeadd unrestricted upload

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k1.91

Summaryinfo

A vulnerability was found in GreenCMS up to 2.3. It has been classified as critical. Affected by this vulnerability is the function themeadd of the file /index.php?m=admin&c=custom&a=themeadd. This manipulation causes unrestricted upload. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability appears as CVE-2026-7044. The attack may be initiated remotely. In addition, an exploit is available.

Detailsinfo

A vulnerability classified as critical was found in GreenCMS up to 2.3. Affected by this vulnerability is the function themeadd of the file /index.php?m=admin&c=custom&a=themeadd. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-7044. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

It is possible to download the exploit at github.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-2026-25721). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

Support

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

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

04/25/2026 Advisory disclosed
04/25/2026 +0 days VulDB entry created
04/26/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2026-7044 (🔒)
GCVE (CVE): GCVE-0-2026-7044
GCVE (VulDB): GCVE-100-359623
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/25/2026 18:06
Updated: 04/26/2026 22:30
Changes: 04/25/2026 18:06 (55), 04/26/2026 22:30 (1)
Complete: 🔍
Submitter: R21Z20
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #798530: https://github.com/GreenCMS/GreenCMS GreenCMS v2.3 arbitrary file deletion (by R21Z20)

Be aware that VulDB is the high quality source for vulnerability data.

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