In WonderCMS 2.3.1, the upload functionality accepts random application extensions and leads to malicious File Upload.

published 2018-01-26 8y ago modified 2026-06-17 4mo 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

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Timeline

2018-01-26 Published
2018-02-05 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, 2026-11-09).

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

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