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Fencer Vulns
critical 9.8

CVE-2020-18432 json

File Upload vulnerability in SEMCMS PHP 3.7 allows remote attackers to upload arbitrary files and gain escalated privileges.

published 2023-06-30 3 y ago modified 2026-06-17 4 mo ago also EUVD-2020-10356

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

File Upload vulnerability in SEMCMS PHP 3.7 allows remote attackers to upload arbitrary files and gain escalated privileges.

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
23 mo ago

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 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

Sources

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.