Vulnerability · Published Apr 26, 2026 · Assigned by VulDB
CVE-2026-7044GreenCMS index.php themeadd unrestricted upload
Medium 6.3
In plain English
A medium-severity unrestricted file upload in GreenCMS. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)0.2%top 89.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-434, CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-359623 | GreenCMS index.php themeadd unrestricted upload vdb-entry, technical-description
- VDB-359623 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #798530 | https://github.com/GreenCMS/GreenCMS GreenCMS v2.3 arbitrary file deletion third-party-advisory
- https://github.com/ueh1013/VULN/issues/21 exploit, issue-tracking