Arbitrary file upload in Greencms
CVE-2026-7044
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 · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (26.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Greencms — versions 2.0, 2.1, 2.2
Weakness classification (CWE)
References
- vuldb.com/vuln/359623 (technical-description, vdb-entry)
- vuldb.com/vuln/359623/cti (signature, permissions-required)
- vuldb.com/submit/798530 (third-party-advisory)
- github.com/ueh1013/VULN/issues/21 (issue-tracking, exploit)
Frequently asked questions
- What is CVE-2026-7044?
- CVE-2026-7044 is a medium-severity vulnerability in Greencms, classified under Improper Access Control. CVSS score: 6.3/10. Published 2026-04-26.
- How severe is CVE-2026-7044?
- Medium severity. CVSS v3 base score is 6.3 out of 10.