File upload vulnerability in ejinshan v8+ terminal security system allows attackers to upload arbitrary files to arbitrary locations on the…

published 2024-01-20 2 y ago modified 2026-06-17 4 mo ago also EUVD-2021-18224

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits: 0; none known

File upload vulnerability in ejinshan v8+ terminal security system allows attackers to upload arbitrary files to arbitrary locations on the server.

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-01-20)

Exploit prediction

0.74% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/huahaiYa/jinshansoft/blob/main/Kingsoft%20Security%20Arbitrary%20File%20Upload%20%2B%20File%20Contains%20Vulnerabilities.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness

CWE-434 Unrestricted Upload of File with Dangerous Type

References

github.com /huahaiYa/jinshansoft/blob/main/Kingsoft%20Security%20Arbitrary%20File%20Upload%20%2B%20File%20Contains%20Vuln
exploit, third-party-advisory

Sources

CVE List CVE-2021-31314
NVD CVE-2021-31314

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.

Summary