CVE-2017-18048 in the critical feed json
Monstra CMS 3.0.4 allows users to upload arbitrary files, which leads to remote command execution on the server, for example because .php (…
published 2018-01-23 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-9188
- cvss
- 8.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 63.4%
- EPSS 63.4% chance of exploitation in 30 days, percentile 99.2%
- public exploits
- 1
- Metasploit
Summary
Monstra CMS 3.0.4 allows users to upload arbitrary files, which leads to remote command execution on the server, for example because .php (lowercase) is blocked but .PHP (uppercase) is not.
Patch / fix
Timeline
- First public exploit (Metasploit exploit/multi/http/monstra_fileupload_exec)
- Published
Exploit prediction
63.35% chance of exploitation in the next 30 days, higher than 99.2% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- Metasploit exploit/multi/http/monstra_fileupload_exec Monstra CMS Authenticated Arbitrary File Upload metasploit exploit, excellent rank, 2017-12-18
- exploit-db.com https://www.exploit-db.com/exploits/43348/ referenced PoC, tagged "exploit" by a source, unverified
- securityprince.blogspot.in https://securityprince.blogspot.in/2017/12/monstra-cms-304-arbitrary-file-upload.html referenced PoC, tagged "exploit" by a source, unverified
- blogs.securiteam.com https://blogs.securiteam.com/index.php/archives/3559 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
github.com
/monstra-cms/monstra/issues/426
patch, third-party-advisory
-
exploit-db.com
/exploits/43348/
exploit, third-party-advisory, vdb-entry
-
securityprince.blogspot.in
/2017/12/monstra-cms-304-arbitrary-file-upload.html
exploit, third-party-advisory
-
blogs.securiteam.com
/index.php/archives/3559
exploit, third-party-advisory
Sources
- CVE List CVE-2017-18048
- NVD CVE-2017-18048
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.