RCE in Magicblack Maccms10
CVE-2026-90788
A security flaw has been discovered in magicblack MacCMS10 2026.1000.4055. Affected by this vulnerability is an unknown functionality of the file /admin1.php/admin/template/index/path/.%40template%40default%40html%40label.html of the component Template Handler. Performing a manipulation results in os command injection. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.022 (82.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Magicblack Maccms10 — versions 2026.1000.4055
Weakness classification (CWE)
References
- github.com/magicblack/maccms10/ (product)
- github.com/magicblack/maccms10/issues/1378 (issue-tracking, exploit)
- vuldb.com/cve/CVE-2026-90788 (third-party-advisory)
- vuldb.com/submit/919268 (third-party-advisory)
- vuldb.com/vuln/403294 (vdb-entry)
- vuldb.com/vuln/403294/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-90788?
- CVE-2026-90788 is a medium-severity vulnerability in Magicblack Maccms10, classified under Command Injection. CVSS score: 4.7/10. Published 2026-09-14.
- How severe is CVE-2026-90788?
- Medium severity. CVSS v3 base score is 4.7 out of 10.