CVE-2018-6411 json
An issue was discovered in Appnitro MachForm before 4.2.3.
published 2018-05-26 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-18168
- cvss
- 9.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 5.5%
- EPSS 5.5% chance of exploitation in 30 days, percentile 92%
- public exploits
- 1
- Exploit-DB
Summary
An issue was discovered in Appnitro MachForm before 4.2.3. When the form is set to filter a blacklist, it automatically adds dangerous extensions to the filters. If the filter is set to a whitelist, the dangerous extensions can be bypassed through ap_form_elements SQL Injection.
Timeline
- Published
- First public exploit (EDB-44804)
Exploit prediction
5.50% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-44804 MachForm < 4.2.3 - SQL Injection / Path Traversal / Upload Bypass webapps, 2018-05-30
- metalamin.github.io https://metalamin.github.io/MachForm-not-0-day-EN/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
exploit-db.com
/exploits/44804/
exploit, third-party-advisory, vdb-entry
-
metalamin.github.io
/MachForm-not-0-day-EN/
exploit, third-party-advisory
-
machform.com
/blog-machform-423-security-release/
release-notes, vendor-advisory
Sources
- CVE List CVE-2018-6411
- NVD CVE-2018-6411
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.