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Description

A vulnerability was found in GreenCMS up to 2.3. Affected is the function themeadd of the file /index.php?m=admin&c=custom&a=themeadd. The manipulation results in unrestricted upload. The attack can be launched remotely. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.

PUBLISHED Reserved 2026-04-25 | Published 2026-04-26 | Updated 2026-04-27 | Assigner VulDB




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Unrestricted Upload

Improper Access Controls

Timeline

2026-04-25:Advisory disclosed
2026-04-25:VulDB entry created
2026-04-25:VulDB entry last update

Credits

R21Z20 (VulDB User) reporter

References

vuldb.com/vuln/359623 (VDB-359623 | GreenCMS index.php themeadd unrestricted upload) vdb-entry technical-description

vuldb.com/vuln/359623/cti (VDB-359623 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/798530 (Submit #798530 | https://github.com/GreenCMS/GreenCMS GreenCMS v2.3 arbitrary file deletion) third-party-advisory

github.com/ueh1013/VULN/issues/21 exploit issue-tracking

cve.org (CVE-2026-7044)

nvd.nist.gov (CVE-2026-7044)

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