CVE-2018-6409 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-2018-18166
- cvss
- 5.3
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 13.8%
- EPSS 13.8% chance of exploitation in 30 days, percentile 96%
- public exploits
- 1
- Exploit-DB
Summary
An issue was discovered in Appnitro MachForm before 4.2.3. The module in charge of serving stored files gets the path from the database. Modifying the name of the file to serve on the corresponding ap_form table leads to a path traversal vulnerability via the download.php q parameter.
Timeline
- Published
- First public exploit (EDB-44804)
Exploit prediction
13.83% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).
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 | 5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
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-2018-6409
- NVD CVE-2018-6409
Fencer Intel 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.