CVE-2017-14521 json
In WonderCMS 2.3.1, the upload functionality accepts random application extensions and leads to malicious File Upload.
published 2018-01-26 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-6022
- cvss
- 8.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 7.3%
- EPSS 7.3% chance of exploitation in 30 days, percentile 94%
- public exploits
- 1
- Exploit-DB
Summary
In WonderCMS 2.3.1, the upload functionality accepts random application extensions and leads to malicious File Upload.
Timeline
- Published
- First public exploit (EDB-43963)
Exploit prediction
7.30% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-43963 Wonder CMS 2.3.1 - Unrestricted File Upload webapps, 2018-02-05
- securitywarrior9.blogspot.in https://securitywarrior9.blogspot.in/2018/01/vulnerability-in-wonder-cms-leading-to.html 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
-
exploit-db.com
/exploits/43963/
exploit, third-party-advisory, vdb-entry
-
securitywarrior9.blogspot.in
/2018/01/vulnerability-in-wonder-cms-leading-to.html
exploit, technical-description, third-party-advisory
Sources
- CVE List CVE-2017-14521
- NVD CVE-2017-14521
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.