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Fencer Vulns
critical 9.8

CVE-2021-42675 json

Kreado Kreasfero 1.5 does not properly sanitize uploaded files to the media directory.

published 2022-06-14 4 y ago modified 2026-07-09 4 mo ago also EUVD-2021-29636

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

Kreado Kreasfero 1.5 does not properly sanitize uploaded files to the media directory. One can upload a malicious PHP file and obtain remote code execution.

Exploit prediction

2.54% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • twitter.com https://twitter.com/1ofThegutHakrs/status/1536246485188128768 referenced PoC, tagged "exploit" by a source, unverified

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
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

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.